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Title: An Annotated Check List of the Mammals of Michoacán, México

Author: Bernardo Villa R.
        E. Raymond Hall

Release Date: March 22, 2012 [EBook #39222]

Language: English

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An Annotated Check List of the Mammals
of Michoacán, México

By

E. RAYMOND HALL and BERNARDO VILLA R.

INTRODUCTION

When General Lázaro Cardenas was President of the Republic of México, encouragement was given by his administration to linguistic groups of native American peoples to record in printed form, eventually in their native languages, accounts of their cultural accomplishments and accounts of the natural resources of the regions concerned. For the Tarascan "Empire" centering in the state of Michoacán, a committee of Mexicans and citizens of the United States of America was formed to forward these aims. Under the leadership of ethnologists on the committee, especially Professor Daniel Rubin F. de la Borbolla and Professor Ralph L. Beals, invitations to coöperate in the studies were extended to biologists. One of us (Hall) was invited to investigate the fauna of native wild mammals. In 1943, assisted by a fellowship which Hall at that time held from the John Simon Guggenheim Memorial Foundation, and with support from Miss Annie M. Alexander, through the University of California Museum of Vertebrate Zoölogy, most of March—March 3 to March 29, 1943—was spent in the state of Michoacán.

Bernardo Villa R. of the Instituto de Biología de la Universidad de México was a member of the party from March 23 to 27. Previously, March 4 to 22, Roberto Alcántar from the Universidad de Michoacán, in Morelia, participated in the field work. Mr. J. R. Alcorn was active in the collecting from the beginning until he entrained for the United States on March 24. The remainder of the field party was made up of E. Raymond Hall, his wife Mary F. Hall, and their three sons, William Joel, Hubert H., and Benjamin D. Hall.

From March 4 to 15 we collected at, and in the vicinity of, Pátzcuaro. We were housed in two cottages kindly made available by Sr. Efrain Buenrostro, in Campo Turista Janitzio, 200 meters northwest of the railroad station in Colonia Revolución. The shore of Lake Pátzcuaro, the cultivated fields surrounded by stone fences, and the oak and pine forests roundabout provided varied habitats.

From March 16 to 23 we collected in the territory 1 to 6 miles [436] south of Tacámbaro, making our headquarters in the Europa Hotel, in the town. The steep main street of Tacámbaro with native pines at the upper end descends to plantings of bananas and sugar cane at the lower end. Our collecting all was done below (south of) the town in the semitropical country and none at all was done above (north of) the town.

From March 24 to 27 (three night's trapping) we collected in the vicinity of Zamora, making our headquarters in rooms diagonally across the street intersection from the Hotel Fenix.

The resulting specimens, approximately 650 in number, were deposited in the Museum of Vertebrate Zoölogy at the University of California at Berkeley.

A noteworthy coincidence is that on the very day, February 26, on which we crossed the international border into México at Laredo, the beginning of the new volcano, Paricutín, was announced in the daily press. Our collecting of mammals in Michoacán was nearly all done in sight of the towering white plume of this rapidly heightening volcanic cone and frequently our traps were thickly dusted with its wind-borne ash. Our eagerness at that time to have stations established for observing the effects on vertebrates of the deposition of ash, was gratified in that Dr. Robert T. Hatt independently had the same idea and such observations at appropriate places and times were begun by him and staff members of the Museum of Zoölogy of the University of Michigan. One of us, Villa, was privileged to share in these observations in the spring of 1947.

This continuing interest in the mammals of Michoacán has made it seem, to us, the more desirable to place on record our findings as to kinds and occurrence of species. In doing this we have examined the collections made previously on Cerro Tancítaro and vicinity by the field party led by Mr. Harry Hoogstraal from the University of Illinois and the Chicago Natural History Museum. The specimens of mammals collected by this field party are in the Chicago Natural History Museum and we are obliged to Mr. Karl P. Schmidt, Mr. Colin C. Sanborn and the late Dr. Wilfred H. Osgood for the privilege of studying this material.

Drs. William H. Burt and Emmet T. Hooper, of the Museum of Zoölogy of the University of Michigan, lent to us for examination five specimens of bats, of as many species, which they had taken in Michoacán. Drs. Remington Kellogg and Henry W. Setzer have provided us with data on specimens of deer and peccary from Michoacán which are in the United States National Museum. [437] Specimens in the Institute of Biology of the University of México have been used. Financial provision by the Kansas University Endowment Association has enabled us to obtain specimens needed for comparison from other parts of México.

In addition to the materials mentioned above we have used published references to mammals of Michoacán and have prepared the following lists of kinds of mammals positively known to us to occur in the Mexican state of Michoacán. It is noteworthy that specimens recorded in the literature from Acámbaro, Michoacán, no longer are to be ascribed to Michoacán, since a relocation of the boundary between the states of Michoacán and Guanajuato, places Acámbaro in the latter state.

Our aims were: (1) To record kinds of mammals positively known from the state, under the correct scientific name, and vernacular names in English, Spanish, and Tarascan. The first Tarascan name is given in the spelling used by Tarascans followed by the phonetic equivalent in English in parentheses. (2) To indicate the geographic range of each kind in the state, and, (3) To record miscellaneous information which it is thought probably will be useful in one way or another to other students whose work certainly will lengthen the list of kinds of mammals known from Michoacán and otherwise add to our knowledge of them.

Several kinds of bats, of which we lack records, certainly occur in Michoacán. Four or five kinds of cats (genus Felis), species of the genera Potos, Lutra, Tayra, Grison, and several other kinds of mammals of which we now lack positive record, also probably occur there; the list of kinds, we expect, will number more than one hundred species and subspecies when more intensive collecting has been done in the state. In all, we have positive record of 85 kinds of native, wild mammals of which specimens have been examined or recorded from Michoacán. Distances and elevations here are recorded either in the metric system or in the English system, according to the system used on the labels of the specimens concerned. Unless otherwise indicated, catalogue numbers of more than 100,000 are of specimens in the University of California Museum of Vertebrate Zoölogy and numbers of less than 100,000 are of the Chicago Natural History Museum.

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Fig. 1. Map of the state of Michoacán showing place names mentioned in the text.

ACCOUNTS OF SPECIES AND SUBSPECIES

Remarks.—The coarse overhair is white all the way to the base in three specimens but is black in its distal two thirds (white in basal third) in four specimens. The overhair, six centimeters anterior to the base of the tail, is 83 (80-85) mm. long in the three gray specimens (those with white overhair) and 68 (64-72) mm. long in the black specimens. The ears and all four feet are black. The tail is black in its proximal half and white in its distal half except in[439] one specimen in which the distal half is almost as dark as the proximal half. Of the two largest specimens, one is a female from 1¾ mi. S Tacámbaro and the other, a male is from 6 mi. S of the same place. Measurements are: Total length, ♂ 810, ♀ 786; length of tail, ♂ 360, ♀ 348; length of hind foot, —, 58; condylobasal length, 110.0; 99.6; zygomatic breadth, 68.5; 59.6; length of nasals, 59.7, 45.0. The tail amounts to 48, 48 and 47 per cent of the total length in specimens from Pátzcuaro; 50 per cent in one from Tancítaro; 45 and 44 per cent in two from Tacámbaro. The subspecies mesamericana probably intergrades with Didelphis virginiana virginiana by way of D. m. texensis and D. v. pigra, as Davis (1944:375) and other writers suggest, in which case the proper name of the subspecies mesamericana would be Didelphis virginiana mesamericana. Until intergradation is actually demonstrated, it seems best to use the name D. m. mesamericana.

Most of our specimens were caught in steel traps, at meat baits, set for small carnivores.

Marmosa canescens canescens (Allen)

Murine Opossum; Spanish, Ratón Tlacuache

Didelphis (Micoureus) canescens Allen, Bull. Amer. Mus. Nat. Hist., 5:235, September 22, 1893, type from Santo Domingo de Guzman, Isthmus of Tehuantepec, México.

Marmosa canescens Allen, Bull. Amer. Mus. Nat. Hist., 9:58, March 15, 1897.

Remarks.—The one unsexed subadult measures 5.5 mm. from Ml to M3 inclusive, which measurement is near the minimum that Tate (1933: table 1, Sec. 5) records for this subspecies but larger than the maximum that he (loc. cit.) records for the subspecies sinaloae which occurs to the northward of Michoacán. Tate (op. cit.:141) lists two other specimens from Los Reyes. Our specimen was caught in a mouse trap set in dry grass between a sugar cane field and a patch of banana trees.

Sorex saussurei saussurei Merriam

Saussure Shrew; Spanish, Musaraña

Sorex saussurei Merriam, Proc. Biol. Soc. Washington, 7:173, September 29, 1892, type from north slope Sierra Nevada de Colima, approximately 8,000 feet, Jalisco.

[440]

Remarks.—Two males from Mount Tancítaro, with much worn teeth, catalogue nos. 52132 and 52138, measure, respectively, as follows: Total length, 122, 114; length of tail, 46, 43; length of hind foot, 15, 14; condylobasal length, 18.4, 18.3; palatal length, 8.0, 7.3; cranial breadth, 9.4, 9.2; least interorbital breadth, 3.7, 3.8; maxillary breadth, 5.5, 5.5; maxillary tooth-row, 6.8, 6.7. The long palate in no. 52132 and the broad brain case in both specimens appear to be only individual variations or possibly variations correlated with the advanced age of the two animals since in other features they do not differ from specimens which are smaller in these two dimensions. Jackson (1928:156) records specimens of this shrew from Mount Patambán and Nahuatzin.

Cryptotis pergracilis pergracilis (Elliot)

Short-tailed Shrew; Spanish, Musaraña Colicorta

Blarina pergracilis Elliot, Field Columb. Mus., publ. 71, zoöl. ser., 3:149, February, 1903, type from Ocotlan, Jalisco, México.

Cryptotis pergracilis pergracilis, Miller, Proc. Biol. Soc. Washington, 24:223, October 31, 1911.

Remarks.—Our one specimen, originally a mount, proves to have a crushed brain case. The specimen was saved on March 10, 1944, by P. Luna, who in March, 1943, told one of us (Hall) that many of these shrews fell into the cement fish-rearing tanks at the biological station situated at Colonia Ibarra, a suburb of Pátzcuaro, on the shore of Lake Pátzcuaro. We are indebted to Dr. H. H. T. Jackson for examining our specimen and assigning a name to it.

Balantiopteryx plicata Peters

Sac-winged Bat; Spanish, Murciélago Sacoptero; Tarascan word for bat is Huasís (Wasis)

Balantiopteryx plicata Peters, Monatsber. k. preuss. Akad. Wiss. Berlin, p. 476, 1867, type from Puntaarenas, Costa Rica.

Remarks.—This bat is a cave dweller, not infrequently found roosting with other species.

Glossophaga soricina leachii (Gray)

Long-tongued Bat; Spanish, Murciélago Siricotéro

Monophyllus leachii Gray, Voyage of the Sulphur, Zoöl., 1:18, 1844, type from Realejo, Nicaragua.

Glossophaga soricina leachii, Miller, Proc. U. S. Nat. Mus., 46:419, December 31, 1913.

[441]

Remarks.—Specimens from El Guayabo were taken in a natural cave which they shared with Desmodus rotundus murinus and Artibeus planirostris planirostris.

The length of the thumb averages 7.4 mm. (7.0 to 7.7). As compared with G. s. alticola from northeast Tlaxcala according to the description given by Davis (1944:377), our specimens agree with alticola in length of thumb. In all other characters they correspond to leachii.

Choeronycteris mexicana Tschudi

ongued Bat; Spanish, Murciélago Carilargo

Choeronycteris mexicana Tschudi, Fauna Peruana, p. 72, 1844, type from México.

Remarks.—A colony of 20 or more bats of this species was found in a natural cave. Four were caught by hand as they flew about after we disturbed them. We returned on the following day, but found that all the bats had left.

Leptonycteris nivalis nivalis (Saussure)

Leaf-nosed Bat; Spanish, Murciélago Lengüilarga

M[=Ischnoglossa]. nivalis Saussure, Revue et Magasin de Zoölogie, 12(ser. 2):492, November, 1860, type from near snow line on Mount Orizaba.

Leptonycteris nivalis, Miller, Proc. Biol. Soc. Washington, 13:126, April 6, 1900.

Remarks.—The subspecific name L. n. nivalis is tentatively applied to this specimen in the absence of an opportunity to compare it directly with the holotype or topotypes of Leptonycteris nivalis yerbabuenae Martinez and Villa (1940:291). Unfortunately, the materials on which this name, L. n. yerbabuenae, was based all were destroyed in 1945 or 1946 while Villa was absent from the Institute of Biology of the University of México.

Artibeus planirostris planirostris (Spix)
[442]
Big Leaf-nosed Bat; Spanish, Murciélago Zapotero

Phyllostoma planirostre Spix, Simiarum et vespertilionum Brasiliensium, p. 66, 1823, type from suburbs of Bahia, Brazil.

Artibeus planirostris, Dobson, Catal. Chiroptera, British Mus., p. 515 (part), 1878.

Remarks.—Our single specimen, a female, was caught on July 28, 1945, by my (B. Villa's) father, Andres Villa, in a natural cave, roosting with the individuals of Glossophaga s. leachii. The northernmost locality in México from which A. p. planirostris previously has been recorded is El Papayo, in the state of Guerrero (Andersen, 1908:238), approximately 225 kilometers to the southward. A. p. planirostris and Artibeus jamaicensis closely resemble each other but A. planirostris may be recognized by the presence of a minute M3 which is absent in A. jamaicensis. Specimen no. 945b has M3 present on both sides of the upper jaw. From Artibeus hirsutus, known from La Salada, Michoacán, approximately 40 miles north and slightly to the east of El Guayabo, our specimen differs in the apparently hairless tibia and interfemoral membrane. The measurements, of no. 945b, recorded above, if compared with those given by Andersen (1908:246) are seen mostly to fall within the range recorded for A. hirsutus. Where measurements are outside this range, they fall within the range of those of the larger A. p. planirostris. We recognize that the Mexican species of Artibeus are not well understood, at least by us.

Artibeus hirsutus K. Andersen

Leaf-nosed Bat; Spanish, Murciélago Zapotero

Artibeus hirsutus K. Andersen, Ann. and Mag. Nat. Hist., 18(ser. 7):420, December, 1906, type from La Salada, Michoacán.

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Remarks.—From Michoacán, Andersen (1908:247) examined three specimens, all from the type locality.

Desmodus rotundus murinus Wagner

Vampire Bat; Spanish, Vampiro

D[esmodus]. murinus Wagner, Schreber's Säugethiere, Suppl., 1:377, 1840, type from México.

Desmodus rotundus murinus, Osgood, Field Mus. Nat. Hist., publ. 155, zoöl. ser., 10:63, January 10, 1912.

Remarks.—This species is colonial; usually it is found in large numbers in favorite roosting sites, mainly in natural caves. Four of our specimens, caught in July, are females and two are young males. One, female, no. 944, has one embryo of 40 mm. in length.

Myotis yumanensis lutosus Miller and Allen

Yuma Myotis; Spanish, Murciélago de Yuma

Myotis yumanensis lutosus Miller and Allen, U. S. Nat. Mus., Bull., 144:72, May 25, 1928, type from Pátzcuaro, Michoacán.

Myotis yumanensis, Miller, N. Amer. Fauna, 13:67, October 16, 1897.

Remarks.—Originally recorded by Miller (1897:67) from Pátzcuaro, the animals from central México were named as a new subspecies by Miller and Allen (1928:72) who record one specimen from El Molino.

Myotis velifer velifer (Allen)

Cave Bat; Spanish, Murciélago Vespertino

Vespertilio velifer J. A. Allen, Bull. Amer. Mus. Nat. Hist., 3:177, December 10, 1890, type from Santa Cruz del Valle, Guadalajara, Jalisco.

Myotis velifer velifer, Allen and Miller, U. S. Nat. Mus. Bull., 144:89, May 25, 1928.

Remarks.—Our specimens were taken on March 12, 1943, from a crevice in the wall of an abandoned chapel where 35 or more individuals of both sexes were living. Miller (1897:59) records the species from Pátzcuaro and Miller and Allen (1928:91) record it from there and also from Lake Chapala, La Palma, Acámbaro (now in Guanajuato) and Negrete.

[444]

Myotis thysanodes thysanodes Miller

Fringed-tailed Myotis; Spanish, Murciélago Colirugosa

Myotis thysanodes Miller, N. Amer. Fauna, 13:80, October 16, 1897, type from Old Fort Tejon, Kern County, California.

Remarks.—In the original description five specimens are recorded from Pátzcuaro and Miller and Allen (1928:127) mention the same locality of occurence.

Myotis californicus mexicanus (Saussure)

California Myotis; Spanish, Murciélago de California

V[espertilio]. mexicanus Saussure, Rev. et Mag. de Zoöl., 12 (ser. 2):282, 1860, type from somewhere in the warmer part of the state of México.

Myotis californicus mexicanus, Miller, N. Amer. Fauna, 13:73, October 16, 1897.

Remarks.—Specimens from Pátzcuaro are recorded by Miller and Allen (1928:160).

Eptesicus fuscus miradorensis (H. Allen)

Big Brown Bat; Spanish, Murciélago Fusco

S[cotophilus]. miradorensis H. Allen, Proc. Acad. Nat. Sci. Philadelphia, p. 287, 1866, type from Mirador, Veracruz.

Eptesicus fuscus miradorensis, Miller, N. Amer. Land Mamm., 1911, p. 62, December 31, 1912.

Lasiurus borealis mexicanus (Saussure)

Red Bat; Spanish, Murciélago Rojizo

A[talapha]. mexicana Saussure, Rev. et Mag. de Zoöl., 13(2):97, March, 1861, type probably from Veracruz, Puebla or Oaxaca.

Lasiurus borealis mexicanus, Miller, N. Amer. Fauna, 13:111, October 16, 1897.

Remarks.—This specimen, a male with much worn teeth, answers well to the description of L. b. mexicanus except that the minute premolar between the canine and fourth premolar is missing on each side of the upper jaw. This, however, seems the less remarkable after examination of 18 skulls of L. b. borealis from the United States in two of which these minute premolars are likewise absent; one of the two specimens from the United States has unworn teeth and the other much worn teeth.[445]

Lasiurus cinereus cinereus (Beauvois)

Hoary Bat; Spanish, Murciélago Pardo

Vespertilio cinereus (misspelled linereus) Beauvois, Catal. Raisonné Mus. Peale, Philadelphia, p. 18, 1796, type locality, Philadelphia, Pennsylvania.

Lasiurus cinereus, H. Allen, Monogr. N. Amer. Bats, Smithsonian Misc. Colls., 7(1): 12, June, 1864.

Corynorhinus rafinesquii mexicanus G. M. Allen

Long-eared Bat; Spanish, Murciélago Narigudo

Corynorhinus megalotis mexicanus Allen, G. M., Bull. Mus. Comp. Zoöl., 60:347, April, 1916, type from "near Pacheco," Chihuahua.

Corynorhinus rafinesquii mexicanus, Miller, U. S. Nat. Mus., Bull., 128:83, April 29, 1924.

Corynorhinus macrotis pallescens, Miller, N. Amer. Fauna, 13:52, October 16, 1897.

Remarks.—Miller (1897:53) recorded one specimen from Pátzcuaro and Allen (1916:349) merely alludes to Miller's record.

Tadarida mexicana (Saussure)

Mexican Free-tailed Bat; Spanish, Murciélago Coludo

Molossus mexicanus Saussure, Rev. et Mag. de Zoöl., 12:283, July, 1860, type from Cofre de Perote, 13,000 feet, Veracruz.

Tadarida mexicana, Miller, Bull. U. S. Nat. Mus., 128:86, April 29, 1924.

Remarks.—This species is widespread in México, ranging from sea level to high elevations as at the type locality. In Michoacán most of our specimens were shot as they flew about at early dusk. The five from Isla Janitzio were shot as they clung to the roof of a cave along with scores of other individuals of the same species.

Eumops underwoodi underwoodi Goodwin

Mastiff Bat; Spanish, Murciélago Mastin

Eumops underwoodi Goodwin, Amer. Mus. Novitates, 1075:2, June 27, 1940, type from El Pedrero, 6 km. N Chinaela, approximately 3,000 ft. elevation, Dept. La Paz, Honduras.

Remarks.—Selected measurements of this specimen are: Total length, 158; ear from notch, 32; mastoid breadth, 16.1; width across[446] crowns of M3, 12.6; maxillary tooth-row (from anterior face of canine above cingulum to posterior face of M3), 11.8. The total length is less than in E. underwoodi or than in Eumops sonoriensis Benson (1947:133); the other measurements given above exceed those of E. sonoriensis and equal or approach those of E. underwoodi. The ears seem not to be connected across the forehead; the color is near (l) Bister above and slightly lighter on the underparts.

The specimen is clearly intermediate in size, as it also is geographically, between Eumops underwoodi underwoodi Goodwin and Eumops underwoodi sonoriensis Benson and gives basis for arranging these two named kinds as subspecies of a single species as Benson (1947:134) suggested might prove to be necessary. We are not certain whether this specimen should be referred to the subspecies underwoodi or sonoriensis and probably this uncertainty will remain until the range of individual variation in underwoodi is known.

Procyon lotor hernandezii Wagler

Raccoon; Spanish, Mapache; Tarascan, Apátze (Apatz)

Pr[ocyon] hernandezii Wagler, Isis, 24:514, 1831, type from Valley of México, according to Nelson and Goldman (Proc. Biol. Soc. Washington, 44:17, February 21, 1931).

Procyon lotor hernandezii, Allen, Bull. Amer. Mus. Nat. Hist., 3:176, December 10, 1890.

Remarks.—In allusion to its habit of washing its food, in captivity at least, before eating it, the Spanish speaking people often refer to this species as ositos labadores. The specimen from 10 mi. ESE Zamora is a skull without lower jaws or indication of sex. Because the racoons damage corn in the roasting ear stage the animals are disliked by the farmers, a score of whom sometimes band together in an organized hunt to kill the animals. Dogs are especially trained to hunt them. In Michoacán no use is made of the pelts.

Nasua narica molaris Merriam

Coati; Spanish, Pizote; Tarascan, Amátze (Amatz)

Nasua narica molaris Merriam, Proc. Biol. Soc. Washington, 15:68, March 22, 1902, type from Manzanillo, Colima; Goldman, Proc. Biol. Soc. Washington, 55:79, June 25, 1942.

Remarks.—We have no positive record of this animal which Goldman (1942:79) writes "is widely distributed from Jalisco south through Colima, Michoacán, ... to southwestern Oaxaca." [447] In the parts of Michoacán visited by us the Spanish name tejón instead of pizote was used for this animal although in parts of México where the badger (Taxidea) occurs, tejón is, we understand, the name used for the badger.

Bassariscus astutus consitus Nelson and Goldman

Ring-tailed Cat; Spanish, Cacomixtle

Bassariscus astutus consitus Nelson and Goldman, Jour. Washington Acad. Sci., 22:487, October 19, 1932, type from La Salada, 40 mi. S Uruapan, Michoacán.

Remarks.—La Salada and three miles northwest of Pátzcuaro are the two localities represented by actual specimens. A live animal, at night, was seen one mile east and four miles south of Tacámbaro at 4,500 feet elevation. The young female from three miles northwest of Pátzcuaro was trapped at a break in a stone fence.

Ring-tailed cats live in the stone walls, crevices and rocky ledges, around corn fields and pasture lands.

Mustela frenata leucoparia (Merriam)

Weasel; Spanish, Comadreja; Tarascan, Apásr or Apatzee (Apatz)

Putorius frenatus leucoparia Merriam, N. Amer. Fauna, 11:29, June 30, 1896, type from Pátzcuaro, Michoacán.

Mustela frenata leucoparia, Miller, Bull. U. S. Nat. Mus., 79:100, December 31, 1912.

Remarks.—This subspecies of weasel is notable for having, among American weasels of any kind, the maximum amount of white on the head. When collecting at Pátzcuaro we saw no live specimens but were shown several from there that had been recently mounted by P. Luna. He regarded the animal as not especially rare.

Spilogale angustifrons angustifrons Howell

Spotted Skunk; Spanish, Zorrillo Manchado

Spilogale angustifrons Howell, Proc. Biol. Soc. Washington, 15:242, December 16, 1902, type from Tlalpam, D. F.

Remarks.—The short tail of our specimen, an adult male, is noteworthy as perhaps also is the breadth between the orbits. External[448] measurements are 338, 101, 39. It weighed 308 grams. Selected cranial measurements are: Basilar length, 44.1; zygomatic breadth, 32.4; postpalatal length, 26.6; least interorbital breadth, 13.8; height of cranium, 16.0. The specimen was trapped in a hole in a stone fence. Howell (1906:23), under the name Spilogale gracilis, recorded another male from Pátzcuaro.

Mephitis macroura macroura Lichtenstein

Hooded Skunk; Spanish, Zorrillo or Mofeta Rayada; Tarascan, Cuitziqui (Kweetzeke)

Mephitis macroura Lichtenstein, Darstellung Neuer oder wenig bekannter Säugethiere pl. 46, 1832, type from mountains northwest of México City.

Remarks.—Skunk tracks were abundant in all localities around Pátzcuaro. Most of our specimens were caught in steel traps, some along the edges of cornfields, others along the highway and along the pole fences. Tarascan friends at Colonia Revolución were eager to have the bodies of the skunks which we caught. They regarded the skunks as a delicacy and told us that this food was reputed to be good for a person's blood and complexion.

Conepatus mesoleucus nelsoni Goldman

Hog-nosed Skunk; Spanish, Zorillo Real

Conepatus mesoleucus nelsoni Goldman, Jour. Mamm., 3:41, February 8, 1922, type from Armería (near Manzanillo), Colima, 200 ft. altitude.

Remarks.—The name C. m. nelsoni is tentatively used for the single skin, which is without skull or indication of sex.

Urocyon cinereoargenteus colimensis Goldman

Gray Fox; Spanish, Zorra Gris; Tarascan, Cúmihuátz (Cumewatz)

Urocyon cinereoargenteus colimensis Goldman, Jour. Washington Acad. Sci., 28:495, November 15, 1938, type from 3 mi. W city of Colima, 1,700 ft. elevation.

Remarks.—The female from southeast of Tacámbaro, caught on March 20, 1943, had two embryos, 28 mm. in length. This female was trapped near a small stream. Goldman (1938:497) reported 7 specimens of U. c. colimensis from the following localities in the state: La Huacana, 1; La Salada, 2; Los Reyes, 1; Mount Tancítaro, 1; Pátzcuaro, 2.

Fig. 1. Panoramic view of Lake Pátzcuaro.

Fig. 2. Stuffed skins, in dorsal view, of 6 males of Mephitis macroura macroura, all trapped within a radius of 5 miles of Pátzcuaro, to show the amount of individual variation in color-pattern. × ¹⁄₁₀.
Photo by W. C. Matthews.

Fig. 1. Ungrazed pasture with oaks on slope of El Estribo, 7,700 feet elevation, two miles west of the town of Pátzcuaro, Michoacán. Several species of rodents, Liomys, Sigmodon, and Peromyscus were taken abundantly in the grass in the immediate foreground. Photo March 16, 1943, by Mary F. Hall.

[449]

Fig. 2. Xerophitic vegetation, eleven miles west of Zamora, Michoacán. 5,750 feet elevation, where rodents were trapped. Photo March 26, 1943, by Mary F. Hall.

Canis latrans cagottis (Hamilton Smith)

Coyote; Spanish, Coyote; Tarascan, Jihuátz (Hewatz)

Lyciscus cagottis Hamilton Smith, Jardine's Naturalist's Library, Mamm., 9:164, 1839, type from Río Frío between city of México and Puebla.

Canis latrans cagottis, Nelson, Proc. Biol. Soc. Washington, 45:224, November 26, 1932.

Remarks.—On March 27 or 28, 1943, in Morelia, at a gasoline filling station, one of us (Hall) saw a freshly killed coyote tied on the bumper of the automobile of a Medical Doctor. In response to inquiry about the animal the Doctor said that he killed it some 15 miles northeast of town.

Lynx rufus escuinapae Allen

Bobcat; Spanish, Gato del Monte; Tarascan, Misícpápu (misicpapu)

Lynx ruffus escuinapae Allen, Bull. Amer. Mus. Nat. Hist., 19:614, November 14, 1903, type from Escuinapa, Sinaloa.

Remarks.—The skull of the male from Pátzcuaro agrees well with those of topotypes of L. r. escuinapae even to the elongate tympanic bullae. Because of their elongation the bullae resemble, in some degree, those of the ocelot. Natives told us that the gato del monte was resident around Pátzcuaro. Four miles south of Pátzcuaro in a cornfield at the edge of an area grown up to oak trees and brush, tracks were seen that our Indian companion identified as those of the gato del monte.

Citellus variegatus variegatus (Erxleben)

Rock Squirrel; Spanish, Ardilla de Pedregal; Tarascan, Kuaráki (Kuaraki)

[Sciurus] variegatus Erxleben, Syst. Regni, Anim., 1:421, 1777; type locality fixed as Valley of México near the city of México, by Nelson, Science, N. S., 8:898, December 23, 1898.

[Citellus] variegatus, Elliot, Field Columb. Mus. Pub., zoöl. ser. 4:148, 1904.

Remarks.—Rock squirrels were seen along rock fences, around Pátzcuaro, where they are fairly common. On July 17 and 18, 1947, at San Juan Parangaricutiro, one of us (Villa) saw these squirrels running over the newly formed lava bed which was still emitting vapors and which in places (between boulders) was emitting heat detectable by the collectors. This is only additional evidence of the animal's strong predilection for rocks, boulders and cliffs, which has earned for it, in parts of the western United States, the vernacular name "rock squirrel" and in México "Ardilla de Pedregal."

Howell (1938:138) reported specimens from the following localities: Acámbaro, 1; Los Reyes, 1; Mount Tancítaro, 2; Pátzcuaro, 12; Queréndaro, 1; Zamora, 2.

Citellus adocetus adocetus Merriam

Lesser Tropical Ground Squirrel; Spanish, Cuiniqui; Tarascan, Kuaráki (Kuaraki)

Citellus adocetus Merriam, Proc. Biol. Soc. Washington, 16:79, May 29, 1903, type from La Salada, 40 miles south of Uruapan, Michoacán.

Remarks.—Ground squirrels of this species are fairly abundant in the arid tropical parts of the state. Their burrows are usually found on stony areas along small ravines or under mesquite (Prosopis juliflora) thickets. The name cuiniqui in use by the Spanish speaking population is merely a corruption of the Tarascan name. Cuiniqui, therefore, is a particular kind of ardilla terrícola (ground squirrel).

Sciurus poliopus nemoralis Nelson

Michoacán Squirrel; Spanish, Ardilla arborícola; Tarascan, Uakuí (Wakqe)

Sciurus albipes nemoralis Nelson, Proc. Biol. Soc, Washington, 12:151, June 3, 1898, type from Pátzcuaro, Michoacán.

Sciurus poliopus nemoralis Nelson, Proc. Washington Acad. Sci., 1:50, May 9, 1899.

Remarks.—Tree squirrels of this kind have been reported by Nelson (1899:51) from Pátzcuaro and Nahuatzin.[451]

The young specimen, no. 2102, ♂, has the tail slender, resembling somewhat that of the S. p. senex from the southward. The underparts of the female are Warm Buff, more clearly so on the underside of the legs.

Sciurus poliopus senex Nelson

Michoacán Squirrel; Spanish, Ardilla Arborícola; Tarascan, Uakuí (Wakqe)

Sciurus poliopus senex Nelson, Proc. Biol. Soc. Washington, 17:148, October 6, 1904, type from La Salada, 40 mi. S Uruapan.

Remarks.—Specimen number 52014, ♂, represents the melanistic phase of this subspecies.

The upper parts of the hind legs in this specimen are slightly grizzled. The upper side of the tail is vermiculated with whitish and the underside of the tail is black.

Thomomys umbrinus pullus Hall and Villa

Southern Pocket Gopher; Spanish, Tuza Serrana; Tarascan, Cúmu (Cŏmŏ)

Thomomys umbrinus pullus Hall and Villa, Univ. Kansas Publ., Mus. Nat. Hist., 1:251, July 26, 1948, type from 5 miles south Pátzcuaro, 7,800 ft., Michoacán.

Remarks.—Most of these pocket gophers were caught in areas supporting a good growth of pine trees in the same places where the much larger pocket gopher, Cratogeomys gymnurus, lived. Concerning the individual designated as the type specimen, H. H. Hall (field notes) writes that when he was making an excavation to reveal the gopher's burrow (5 inches below the surface), he dug deeper than was necessary and broke into the burrow of a Cratogeomys directly below. Another of us (E. R. Hall) had the same experience where the burrow of a Thomomys was approximately six inches below ground and that of a Cratogeomys approximately 16 inches below the surface of the ground. At the time this arrangement led us to wonder if Thomomys was in some sense a "parasite" on the larger Cratogeomys by levying on food stores, if Cratogeomys has any, but we found no evidence that such was the case and from [452] our subsequent trapping concluded that the two-story arrangement was accidental and not the rule. The habit of burrowing at different levels probably was one factor which permitted the two kinds of pocket gophers to live in the same area. The average weight of these gophers was 86 grams in males and 74 grams in females, or only an eighth as much as in Cratogeomys.

Cratogeomys gymnurus imparilis (Goldman)

Plains Pocket Gopher; Spanish, Tuza Llanera; Tarascan, Cúmu (Cŏmŏ)

Platygeomys gymnurus imparilis, Goldman, Jour. Mamm., 20:89, February 14, 1939, type from Pátzcuaro, 7,000 ft., Michoacán.

Platygeomys tylorhinus Merriam, N. Amer. Fauna, 8:167, pl. 13, fig. 1, January 31, 1895.

Remarks.—Burrows were common in cultivated fields and along the roads and trails on the southern and southeastern side of Lake Pátzcuaro. In the vicinity of Tacámbaro we noted burrows only in the area between one and a half and two miles south of town where two specimens were taken. As mentioned in the immediately preceding account, the small Thomomys umbrinus pullus and the large Cratogeomys were found in the same area. The color of our specimens varies from Cinnamon-Brown through Prouts Brown and in some specimens is Fuscous Black.

Hooper (1946:397) has shown that the genus Platygeomys is not generically distinct from the earlier named Cratogeomys. From independent study of specimens not examined by Hooper we have satisfied ourselves that he is correct in synonymizing Platygeomys under Cratogeomys. Average and extreme weights of 4 of each sex from 2 to 5 miles south of Pátzcuaro are: ♂, 683 (562-819); ♀, 558 (438-707) grams.

Cratogeomys angustirostris (Merriam)

Plains Pocket Gopher; Spanish, Tuza Llanera; Tarascan, Cúmu (Cŏmŏ)

Platygeomys tylorhinus angustirostris Merriam, Proc. Biol. Soc. Washington, 16:81, May 29, 1903, type from Patambán, 10,000 ft., Michoacán.

Platygeomys angustirostris, Goldman, Jour. Mamm., 20:90, February 14, 1939.

[453]

Cratogeomys varius (Goldman)

Plains Pocket Gopher; Spanish, Tuza Llanera; Tarascan, Cúmu (Cŏmŏ)

Platygeomys varius Goldman, Jour. Mamm., 20:90, February 14, 1939, type from Uruapan, about 6,000 ft., Michoacán.

Remarks.—Specimens from localities intermediate between Uruapan, the type locality of C. varius, and the known localities of occurence of Cratogeomys gynmurus imparilis are much needed to ascertain if C. varius is specifically different from C. g. imparilis, or merely subspecifically different.

Zygogeomys trichopus tarascensis Goldman

Michoacán Pocket Gopher; Spanish, Tuza de Michoacán; Tarascan, Cúmu (Cŏmŏ)

Zygogeomys trichopus tarascensis Goldman, Proc. Biol. Soc. Washington, 51:211, December 23, 1938, type from six miles southeast of Pátzcuaro, 8,000 ft., Michoacán.

Zygogeomys trichopus Merriam, N. Amer. Fauna, 8:196, January 31, 1895.

Remarks.—As we drove an automobile from Pátzcuaro to Tacámbaro we noted mounds made by pocket gophers along the road in the highest part of the pass and supposed that these mounds were made by Zygogeomys although we took no specimens of any kind of pocket gopher in the pass.

Zygogeomys trichopus trichopus Merriam

Michoacán Pocket Gopher; Spanish, Tuza de Michoacán; Tarascan, Cúmu (Cŏmŏ)

Zygogeomys trichopus Merriam, N. Amer. Fauna, 8:196, pl. 6, 14-18, January 31, 1895, type from Nahuatzin, Michoacán.

Remarks.—The upper parts of specimens available to us are rich Seal-Brown and glossy. The chin, and in most specimens, the upper side of the hind feet are white; the irregular white patch of the throat is present only in two young females, numbers 51974 and 51978.[454]

Liomys pictus plantinarensis Merriam

Western Spiny Pocket Mouse; Spanish, Ratón Espinoso Occidental; Tarascan word for mouse is Jeyáqui (Hayake)

Liomys plantinarensis Merriam, Proc. Biol. Soc. Washington, 15:46, March 5, 1902, type from Plantinar, Jalisco.

Liomys pictus plantinarensis, Goldman, N. Amer. Fauna, 34:37, September 7, 1911.

Remarks.—Goldman (1911:38) records specimens from Los Reyes, noting that in some cranial features they suggest intergradation between L. p. plantinarensis and L. p. parviceps.

Liomys pictus parviceps Goldman

Western Spiny Pocket Mouse; Spanish, Ratón Espinoso Occidental

Liomys parviceps Goldman, Proc. Biol. Soc. Washington, 17:82, March 21, 1904, type from La Salada, "40 miles south of Uruapan, Michoacán."

Liomys pictus parviceps Goldman, N. Amer. Fauna, 34:38-39, September 7, 1911.

Remarks.—Most measurements show a sexual dimorphism in this subspecies. Adult males are 15 per cent larger in external measurements except that the foot is approximately the same. Cranial measurements average approximately 5 per cent larger in males except that the breadth of the rostrum and length of the maxillary tooth-row are slightly less. South and east of Tacámbaro our specimens all were taken in dry semitropical country, where bananas and sugar cane were the principal crops grown. This subspecies has been recorded also from La Huacana, Michoacán, as well as from La Salada, the type locality, by Goldman (1911:39).

Liomys irroratus jaliscensis (Allen)

Northern Spiny Pocket Mouse; Spanish, Ratón Norteño

Heteromys jaliscensis Allen, Bull. Amer. Mus. Nat. Hist., 22:251, July 25, 1906, type from Las Canoas, approximately 20 mi. W Zapotlán, 7,000 ft., Jalisco.

Liomys irroratus jalicensis, Goldman, N. Amer. Fauna, 34:60, September 7, 1911.

Remarks.—As explained in detail by Hall and Villa (1948:254) these specimens from Zamora are intergrades between L. i. jaliscensis[455]

and L. i. acutus and with almost equal propriety could be referred to either subspecies.

Liomys irroratus acutus Hall and Villa

Northern Spiny Pocket Mouse; Spanish, Ratón Norteño

Liomys irroratus acutus Hall and Villa, Univ. Kansas Publ., Mus. Nat. Hist., 1:253, figs. 4-6, July 26, 1948, type from 2 mi. W Pátzcuaro, 7,700 ft., Michoacán.

Liomys irroratus alleni, Goldman, N. Amer. Fauna, 34:57, September 7, 1911, part.

Remarks.—None of the eight females contained embryos. Two adult males weigh, in grams, 71.5 and 65.1; the average and extreme weights for five adult females are 50.8 (44.8-61.8).

Liomys irroratus alleni (Coues)

Northern Spiny Pocket Mouse; Spanish, Ratón Norteño

Heteromys alleni Coues, Bull. Mus. Comp. Zoöl., 8:187, March, 1881, type from Río Verde, San Luis Potosí, México.

Liomys irroratus alleni Goldman, N. Amer. Fauna, 34:56, September 7, 1911.

Remarks.—The specimens from Queréndaro are not typical of the subspecies L. i. alleni in that the shape of the interparietal bone and width of the basisphenoid bone are almost exactly intermediate between the conditions obtaining in typical L. i. alleni and topotypes of L. i. acutus.

Reithrodontomys megalotis saturatus Allen and Chapman

Western Harvest Mouse; Spanish, Ratón Orejudo

Reithrodontomys saturatus Allen and Chapman, Bull. Amer. Mus. Nat. Hist., 9:201, June 16, 1897, type from Las Vigas, Veracruz.

Reithrodontomys megalotis saturatus, Howell, N. Amer. Fauna, 36:36, June 5, 1914.

Remarks.—Howell (1914:37) referred nine specimens from Nahuatzin to this race and two from the same place to the subspecies R. m. zacatecae. Our specimens from Zamora agree with topotypes[456] of R. m. saturatus and with specimens of that subspecies from the Valley of México in dark color and large size.

If our specimens of Reithrodontomys megalotis are correctly identified, subspecifically, R. m. zacatecae ranges southward around the western end of the geographic range of R. m. saturatus.

Where R. megalotis and R. fulvescens occur together, we find the skull of the latter to be distinguishable by: a median spine on the posterior border of the hard palate (truncate in R. megalotis); an S-shaped instead of a C-shaped pattern on the worn occlusal face of the last lower molar; and two re-entrant angles, on the lateral side on the worn occlusal surface of the third upper molar, reaching halfway across the tooth whereas in R. megalotis the anterior re-*entrant angle is wanting or extends less than a third of the way across the crown surface of the tooth.

Reithrodontomys megalotis zacatecae Merriam

Western Harvest Mouse; Spanish, Ratón Orejudo

Reithrodontomys megalotis zacatecae Merriam, Proc. Washington Acad. Sci., 3:557, November 29, 1901, type from Valparaiso Mountains, Zacatecas.

Remarks.—Howell (1914:40) has referred four specimens from Patambán to this subspecies, and our large series from the vicinity of Pátzcuaro is also referred to R. m. zacatecae because of small size and reddish (less blackish) color. We lack typical specimens of R. m. zacatecae from the type locality for comparison and our knowledge of zacatecae is derived from Howell's (1914:39) description of it.

Average measurements of 5 adult males of R. m. zacatecae from the Pátzcuaro area showing much wear on the teeth compared with those of five specimens from the Zamora area, of corresponding sex and age of R. m. saturatus reveal the smaller size of R. m. zacatecae. Total length, 157, 166; length of tail, 84, 84; length of hind foot, 19.6, 20.1; length of ear from notch in flesh, 14.8, 14.0; basilar length, 16.2, 16.6; length of nasals, 8.3, 8.5; zygomatic breadth, 11.1, 11.5; mastoid breadth, 9.9, 10.2; breadth of rostrum, 3.8, 4.0; interorbital construction, 3.2, 3.1; alveolar length of maxillary tooth-row, 3.5, 3.5; length of rostrum, 7.7, 8.0.[457]

Reithrodontomys fulvescens tenuis Allen

Fulvous Harvest Mouse; Spanish, Ratón Moreno

Reithrodontomys tenuis Allen, Bull. Amer. Mus. Nat. Hist., 12:15, March 4, 1899, type from Rosario, Sinaloa.

Reithrodontomys fulvescens tenuis, Howell, N. Amer. Fauna, 36:45, June 5, 1914.

Remarks.—Of the 19 specimens from the vicinity of Tacámbaro, only two have the underparts reddish as does R. f. inexspectatus. The upper parts are less reddish than in R. f. inexspectatus but more reddish and less blackish than in R. f. toltecus from the valley of México or than in R. f. toltecus from Zamora. The external measurements and cranial measurements are less than in R. f. toltecus or R. f. inexspectatus and are as small as, or even smaller than, those of R. f. tenuis to the northward or than those of R. f. nelsoni to the westward. Relying only on printed descriptions of R. f. tenuis and R. f. nelsoni, we are inclined to refer our specimens to R. f. tenuis although the reddish color, we suppose, is evidence of intergradation with R. f. nelsoni and R. f. inexspectatus.

The four skins from Zamora are gray, as opposed to reddish, both above and below and in this respect they agree with the description of R. f. tenuis. They are lighter-colored (grayer) than either R. f. toltecus or R. f. inexspectatus. The four specimens from Zamora are larger than animals from the vicinity of Tacámbaro and average slightly smaller than topotypes of R. f. inexspectatus.

By identifying our specimens as R. f. inexspectatus and R. f. tenuis, we are left without any specimens that we, ourselves, have examined, which are referable to the subspecies R. f. toltecus. The specimens from Los Reyes which Howell (1914:47) referred to R. f. toltecus have not been seen by us, and we guess, on the criteria used by us, that the animals would be referable to R. f. tenuis. Because Dr. Emmet T. Hooper has a revisionary study of the Mexican Reithrodontomys underway, we have not attempted to bring together all of the pertinent material from different collections as would be required for an ideally thorough analysis of the geographic variation in Reithrodontomys megalotis and Reithrodontomys fulvescens.[458]

As illustrative of statements made concerning the average size of Reithrodontomys fulvescens, the following measurements, all of specimens with much wear on each of the molar teeth, are recorded.

Reithrodontomys fulvescens inexspectatus Elliot

Fulvous Harvest Mouse; Spanish, Ratón Moreno

Rhithrodontomys inexspectatus Elliot, Field Columb. Mus. zoöl. ser., 3:145, February, 1903, type from Pátzcuaro, Michoacán.

Reithrodontomys fulvescens toltecus, Howell, N. Amer. Fauna, 36:51, June 5, 1914, part.

Remarks.—Howell (1914:51) made R. inexspectatus Elliot a synonym of R. f. toltecus and perhaps we should follow him in this. The facts are that in our large series from the vicinity of Pátzcuaro, the upper parts are more reddish than in R. f. toltecus from the valley of México, and more reddish than in R. f. tenuis if we correctly interpret Howell's (op. cit.,:45) description of R. f. tenuis. In the color of the underparts the series is, to us, indistinguishable from topotypical toltecus and therefore has more reddish underparts than[459] R. f. tenuis, as we know R. f. tenuis, from Howell's (loc. cit.) description. In size, the series from Pátzcuaro is intermediate between R. f. tenuis and R. f. toltecus but nearer the latter.

Reithrodontomys chrysopsis chrysopsis Merriam

Volcano Harvest Mouse; Spanish, Ratón Dorado

Reithrodontomys chrysopsis Merriam, Proc. Biol. Soc. Washington, 13:152, June 13, 1900, type from Mount Popocatepetl, México.

Reithrodontomys chrysopsis chrysopsis, Howell, N. Amer. Fauna, 36:66, June 5, 1914.

Remarks.—Howell (1914:68) lists nine specimens from Patambán. We have not examined these specimens. He listed at the same time seven of the specimens from Tancítaro, but we have found specimens from Tancítaro to be of another subspecies, R. c. seclusus. Accordingly, we are in doubt as to whether the mice from Patambán are subspecies chrysopsis, seclusus, or an unnamed subspecies and our use here of the name Reithrodontomys chrysopsis chrysopsis for them is, of course, provisional.

Reithrodontomys chrysopsis seclusus Hall and Villa

Volcano Harvest Mouse; Spanish, Ratón Dorado

Reithrodontomys chrysopsis seclusus Hall and Villa, Proc. Biol. Soc. Washington, 62: 163, August 23, 1949, type from Mount Tancítaro, 7,800 ft., Michoacán.

Reithrodontomys chrysopsis chrysopsis, Howell, N. Amer. Fauna, 36:66, June 5, 1914, part.

Remarks.—The 22 specimens in the Chicago Natural History Museum are remarkably uniform in color in spite of differences in age; 17 are so young as to have the first upper molar only slightly worn and 5 are adults. In preparing the original description of R. c. seclusus, known only from specimens in the summer pelage, comparison of color was made with only the winter pelage of R. c. chrysopsis and it was pointed out that the differences noted in color between the two subspecies might be seasonal rather than subspecific. A summer specimen of R. c. chrysopsis (K. U. 17980, taken on June 15, 12 km. ESE Amecameca, 11,500 ft.), is available as the present account is being written. In direct comparison with the original material of R. c. seclusus, all in summer pelage, and[460] in comparison with a specimen of R. c. chrysopsis in winter pelage (January 18), from 30 km. E Amecameca, the summer pelage of no. 17980 is more blackish than the winter pelage and therein more closely resembles that of R. c. seclusus. The same is true of the more sparsely haired tail. The ears, however, are blackish as in winter-taken R. c. chrysopsis. This feature and also the large size and different cranial proportions of specimen no. 17980 are in accordance with the differences between R. c. chrysopsis and R. c. seclusus as recorded in the original description of the latter.

Baiomys taylori analogus (Osgood)

Northern Pygmy Mouse; Spanish, Ratón Pigmeo Norteño

Peromyscus taylori analogus Osgood, N. Amer. Fauna, 28:256, April 17, 1909, type from Zamora, Michoacán.

Baiomys taylori analogus, Miller, N. Amer. Land. Mamm., 1911, p. 137, December 31, 1912.

Remarks.—Osgood (1909:257) has recorded this subspecies also from Acámbaro and Los Reyes. We found that these animals got caught in our traps almost as often in the daytime as at night and concluded that they were less nocturnal, or at any rate more diurnal, than any of the other cricetine mice at the places in Michoacán where we trapped.

Baiomys musculus musculus (Merriam)

Tropical Pygmy Mouse; Spanish, Ratón Pigmeo Tropical

Sitomys musculus Merriam, Proc. Biol. Soc. Washington, 7:170, September 29, 1892, type from Colima, Colima.

Peromyscus musculus, Allen and Chapman, Bull. Amer. Mus. Nat. Hist., 9:203, June 16, 1897.

Baiomys musculus, Mearns, U. S. Nat. Mus. Bull., 56:381, April 13, 1907.

Remarks.—Osgood (1909:258) has recorded this subspecies also from La Huacana and La Salada. Three adult males with much worn teeth weigh, in grams, 8.3, 9.3, and 10.8. Weights of three adult, nonpregnant, females are 8.1, 9.4, and 9.7. None of our 13 females was pregnant.[461]

Peromyscus maniculatus labecula Elliot

Deermouse; Spanish, Ratón Cuatralvo

Peromyscus labecula Elliot, Field Columb. Mus., zoöl. ser., 3:143, February (March?), 1903, type from Ocotlan, Jalisco.

P[eromyscus]. s[onoriensis]. labecula, Osgood, Proc. Biol. Soc. Washington, 17:57, March 21, 1904.

Remarks.—The zygomatic arches are less widely flaring in specimens from Tancítaro than in those from Pátzcuaro.

Peromyscus perfulvus Osgood

Marsh Mouse; Spanish, Ratón Breñero

Peromyscus perfulvus Osgood, Jour. Mamm., 26:299, November 14, 1945, type from 10 kilometers west of Apatzingan, 1,040 ft., Michoacán.

Remarks.—J. R. Alcorn took these specimens between fields of sugar cane in tall (5 ft. high) grass growing in a belt 10 feet or so wide along side a stream, which a person could step across. The one adult, no. 100597, was recognized at the time of capture as different from any other species known to us, by reason of the long, unicolored, sparsely-haired tail and nearly clear Cinnamon Rufous color above, white underparts, white feet, and dark brown ears. The four other specimens in darker immature pelage are plumbeous and cinnamon whereas immature individuals of comparable age of Peromyscus banderanus caught in the same place are plumbeous above and lack the cinnamon color. The immature animals of the two species differ in color more than do the adults. Osgood (1945:300) has recorded eleven specimens from the type locality. Our one adult weighs 52.4 grams.

Peromyscus boylii evides Osgood

Brush Mouse; Spanish, Ratón de Chaparral

Peromyscus spicilegus evides Osgood, Proc. Biol. Soc. Washington, 17:64, March 21, 1904, type from Juquila, Oaxaca.

Peromyscus boylei evides Osgood, N. Amer. Fauna, 28:152, April 17, 1909.

Remarks.—Osgood (1909:153) recorded 31 specimens from Los Reyes. Weights recorded by the collectors of our specimens for 13 males from the vicinity of Tacámbaro, are 24.8 (17.2-37.1) and for 9 females 25.0 (20.0-31.5) grams. These weights include those of subadults as well as those of adults.

Peromyscus boylii levipes Merriam

Brash Mouse; Spanish, Ratón de Chaparral

Peromyscus levipes Merriam, Proc. Biol. Soc. Washington, 12:123, April 30, 1898, type from Mount Malinche, Tlaxcala.

Peromyscus boylei levipes, Osgood, N. Amer. Fauna, 28:153, April 17, 1909.

Remarks.—Osgood (1909:155) records one specimen of this subspecies from Pátzcuaro.

Peromyscus hylocetes Merriam

Woods Mouse; Spanish, Ratón Ocotero

Peromyscus hylocetes Merriam, Proc. Biol. Soc. Washington, 12:124, April 30, 1898, type from Pátzcuaro, 7,000 feet, Michoacán; Osgood, N. Amer. Fauna, 28:159, pl. 3, fig. 8, April 17, 1909.

Remarks.—All of the specimens were taken in pine forest. The old male from nine miles southeast of Pátzcuaro weighs 43.7 grams and the younger male from there 35 grams. The adults from Tancítaro have longer diastemae and some have the braincase more prolonged posteriorly, than in specimens from the vicinities of San Juan and Pátzcuaro but individual variation is considerable and we are unable to differentiate some of the adults from Tancítaro from those from elsewhere.

Peromyscus truei gratus Merriam

Piñon Mouse; Spanish, Ratón Piñonero

Peromyscus gratus Merriam, Proc. Biol. Soc. Washington, 12:123, April 30, 1898, type from "Tlalpam," D. F.

Peromyscus sagax Elliot, Field Columb. Mus., Chicago, zoöl. ser., 3:142, February, 1903, type from La Palma, Michoacán.

Peromyscus pavidus Elliot, Field Columb. Mus., Chicago, zoöl. ser., 3:142, February, 1903, type from Pátzcuaro, Michoacán.

Peromyscus zelotes Osgood, Proc. Biol. Soc. Washington, 17:67, March 21, 1904, type from Queréndaro, Michoacán.

[463]

Peromyscus truei gratus, Osgood, N. Amer. Fauna, 28:173, April 17, 1909.

Remarks.—The ear measured from the notch is shortest, 19 (18-21), at Zamora, intermediate, 21 (19-23), at Pátzcuaro, and longest, 21.8 (20-23), at the type locality of gratus in the Valley of México.

Peromyscus melanophrys zamorae Osgood

Blackish Mouse; Spanish, Ratón Obscuro

Peromyscus melanophrys zamorae Osgood, Proc. Biol. Soc. Washington, 17:65, March 21, 1904, type from Zamora, Michoacán; N. Amer. Fauna, 28:187, April 17, 1909.

Remarks.—Insofar as we know, this mouse has been taken in Michoacán only at the type locality.

Peromyscus banderanus banderanus Allen

Tarascan Mouse; Spanish, Ratón Tarasco

Peromyscus banderanus Allen, Bull. Amer. Mus. Nat. Hist., 9:51, March 15, 1897, type from Valle de Banderas, Nayarit; Osgood, Jour. Mamm., 26:300, November 14, 1945.

Peromyscus banderanus vicinior Osgood, N. Amer. Fauna, 28:209, 210, April 17, 1909, part.

Remarks.—Specimens from Los Reyes referred to the subspecies P. b. vicinior by Osgood (1909:209-210) were later characterized by Osgood (1945:300) as agreeing with specimens from Zitácuaro, and Osgood (loc. cit.) thought that those from both Los Reyes and Zitácuaro were not P. b. vicinior but possibly P. b. banderanus. He had this material set aside for further study when he showed it to one of us (Hall) in 1945. It was his intention to revise the entire species (P. banderanus) but so far we know never did this before his death.

Peromyscus banderanus vicinior Osgood

Tarascan Mouse; Spanish, Ratón Tarasco

Peromyscus banderanus vicinior Osgood, Proc. Biol. Soc. Washington, 17:68, March 21, 1904, type from La Salada, Michoacán.

Remarks.—There is much variation in size in our animals. The three largest males weigh, in grams, 67.5, 50.3, 48.9 and corresponding figures for the two heaviest, nonpregnant, females are 53.5 and 48.3 grams. Of the 14 adult females, only one was recorded as having embryos; it had two embryos each 24 millimeters in crown to rump length. Where we trapped among big boulders and among the roots of trees of the genus Ficus, Peromyscus banderanus vicinior was the only species of the genus taken. Peromyscus boylii evides occurred in the less tropical vegetation, altitudinally and zonally above P. b. vicinior.

Peromyscus melanotis Allen and Chapman

Black-eared Deermouse; Spanish, Ratón Montañero

Peromyscus melanotis Allen and Chapman, Bull. Amer. Mus. Nat. Hist., 9:203, June 16, 1897, type from Las Vigas, 8,000 ft., Veracruz.

Remarks.—The elevation recorded on the label of one specimen is 9,000 feet and on the labels of other specimens is no lower than 10,500 feet and on some is as high as 12,000 feet. The elevation of capture is not recorded for two specimens. Osgood (1909:112) previously recorded the species from 12,000 feet elevation on Mount Tancítaro.

Oryzomys couesi regillus Goldman

Tropical Rice Rat; Spanish, Rata Arrocera Tropical; Tarascan word for rat is Jeyáquihuiri (Hayakewire), or Sarisi

Oryzomys couesi regillus Goldman, Proc. Biol. Soc. Washington, 28:129, June 29, 1915, type from Los Reyes, Michoacán; Goldman, N. Amer. Fauna, 43:37, September 23, 1918.

Remarks.—The tooth-row is longest in the specimens from Zamora, shortest in those from Tacámbaro and intermediate in length in the one specimen from Pátzcuaro. The shorter tooth-row at the lower elevation (Tacámbaro), we interpret as intergradation with Oryzomys couesi mexicanus. In color the specimens from Tacámbaro are, to us, indistinguishable from those from Zamora and Pátzcuaro but the color is notably darker than that of specimens from the vicinity of Apatzingan which are here referred to the subspecies [465] Oryzomys couesi mexicanus. The largest male, fully adult from Zamora weighs 82.9 grams and the largest one from the vicinity of Tacámbaro weighs 73.6 grams.

Oryzomys couesi mexicanus Allen

Tropical Rice Rat; Spanish, Rata Arrocera Tropical

Oryzomys mexicanus Allen, Bull. Amer. Mus. Nat. Hist., 9:52, March 15, 1897, type from Hacienda San Marcos, 3,500 ft., Tonila, Jalisco.

Oryzomys couesi mexicanus, Goldman, N. Amer. Fauna, 43:33, September 23, 1918.

Remarks.—These specimens are notably paler and have shorter tooth-rows than those referred to O. c. regillus.

Oryzomys fulvescens lenis Goldman

Fulvous Rice Rat; Spanish, Rata Arrocera Pigmea

Oryzomys fulvescens lenis Goldman, Proc. Biol. Soc. Washington, 28:130, June 29, 1915, type from Los Reyes, Michoacán; N. Amer. Fauna, 43:91, September 23, 1918.

Remarks.—The type and one topotype so far as we know are the only specimens of this species to have been obtained from the state. The size is hardly larger than that of a large Reithrodontomys.

Sigmodon melanotis Bailey

Fulvous Cotton Rat; Spanish, Rata Algodonera Leonada

Sigmodon melanotis Bailey, Proc. Biol. Soc. Washington, 15:114, June 2, 1902, type from Pátzcuaro, 7,000 ft., Michoacán.

Remarks.—This species was taken along with the species S. hispidus two miles west of Pátzcuaro, and can be easily distinguished from the latter by the dark reddish as opposed to grayish color of the upperparts and by the shorter hind foot (less instead of more than 32.5 mm.).

Sigmodon hispidus mascotensis Allen

Hispid Cotton Rat; Spanish, Rata Algodonera Setosa

Sigmodon mascotensis Allen, Bull. Amer. Mus. Nat. Hist., 9:54, March 15, 1897, type from San Sebastián, near Mascota, Jalisco.

Sigmodon hispidus mascotensis, Bailey, Proc. Biol. Soc. Washington, 15:108, June 2, 1902.

[466]

Remarks.—Bailey (1902:109) records a "very large" specimen from Queréndaro. Our specimens have shorter molariform tooth-rows than do those from nearer the type locality, for example, those from Tuxpan, Las Canoas, and Artenkiki, all three places in Jalisco.

Sigmodon hispidus atratus Hall

Hispid Cotton Rat; Spanish, Rata Algodonera Setosa

Sigmodon hispidus atratus Hall, Proc. Biol. Soc. Washington, 62:149, August 23, 1949, type from 6½ mi. W Zamora, 5,950 ft., Michoacán.

Remarks.—When the present account first was prepared our specimen from six and a half miles west of Zamora was tentatively referred to S. h. mascotensis. Subsequently a second specimen, from Zamora, was found. It agreed with the specimen from six and a half miles west of Zamora. Inasmuch as the second specimen agrees with the first and since each of the two differs from any previously described kind, a name and description were published in time to be inserted in the present account. From S. h. mascotensis, S. h. atratus differs in shorter hind foot, darker upper parts, more densely haired tail, shorter skull, more convex dorsal longitudinal outline of skull, posteriorly constricted anterior palatine foramina instead of parallel-sided foramina, and shorter and less decurved anterior process of maxillary arm of zygoma.

Neotomodon alstoni alstoni Merriam

Volcano Mouse; Spanish, Ratón de Los Volcanes

Neotomodon alstoni Merriam, Proc. Biol. Soc. Washington, 12:128, April 30, 1898, type from Nahuatzin, 8,500 ft., Michoacán.

Remarks.—The taking of specimens on Mount Tancítaro extends the known geographic range of Neotomodon approximately 75 kilometers to the southwestward; the westernmost locality previously known was Nahuatzin, the type locality.

[467]

Nelsonia goldmani Merriam

Dwarf Wood Rat; Spanish, Rata Montera Minúscula

Nelsonia goldmani Merriam, Proc. Biol. Soc. Washington, 16:80, May 29, 1903, type from Mount Tancítaro, Michoacán.

Remarks.—In the original description three specimens are recorded from the type locality.

Neotoma latifrons Merriam

White-throated Wood Rat; Spanish, Rata Montera Frentuda

Neotoma latifrons Merriam, Proc. Biol. Soc. Washington, 9:121, July 2, 1894, type from Queréndaro, Michoacán.

Neotoma ferruginea tenuicauda Merriam

Ferruginous Wood Rat; Spanish, Rata Ferruginosa

Neotoma tenuicauda Merriam, Proc. Biol. Soc. Washington, 7:169, September 29, 1892, type from north slope of Sierra Nevada de Colima, 12,000 ft., Colima.

Neotoma ferruginea tenuicauda, Howell, N. Amer. Fauna, 31:73, October 19, 1910.

Remarks.—Our one specimen from 9 miles southeast of Pátzcuaro was caught in a small steel trap set at a meat bait.

Microtus mexicanus salvus Hall

Mexican Meadow Mouse; Spanish, Metorito

Microtus mexicanus salvus Hall, Univ. Kansas Publ., Mus. Nat. Hist., 1:426, December 24, 1948, type from Mount Tancítaro, 11,400 ft., Michoacán.

Microtus mexicanus fundatus Hall

Mexican Meadow Mouse; Spanish, Metorito

Microtus mexicanus fundatus Hall, Univ. Kansas Publ., Mus. Nat. Hist., 1:425, December 24, 1948, type from 3½ mi. S. Pátzcuaro, 7,900 ft., Michoacán.

Remarks.—Of the 23 females, only one was pregnant. It had two [468] embryos. Average and extreme weights of ten adults of each sex, are: males, 37.8 (31.5-48.2); females, 38.0 (31.0-48.6) grams. Our specimens were trapped in well-defined runways beneath a rail fence where there was a growth of grass sufficient to make a cover for the runways. Bailey (1900:54-55) has recorded under the name Microtus mexicanus phaeus specimens from Nahuatzin which may be referable to the subspecies M. m. fundatus.

Mus musculus subsp.?

House Mouse; Spanish, Ratón Casero

Mus musculus Linnaeus, Systema Naturae, ed. 10, 1:62, 1758, type from Upsala, Sweden.

Remarks.—In each of our specimens the belly is dark, approximately as dark as the back. The specimens caught by us were living in the wild; that is to say, they were not caught in and around buildings. Elliot (1903:141) records the species from Pátzcuaro.

Rattus rattus alexandrinus (Geoffroy)

Black Rat; Spanish, Rata Negra

Mus alexandrinus Geoffroy, Catal. Mammif. du Mus. Nat. d'Hist., Paris, p. 192, 1803, type from Alexandria, Egypt.

R[attus]. rattus alexandrinus, Hinton, Jour. Bombay Nat. Hist. Soc., 26:63, December 20, 1918.

Remarks.—These specimens answer well to the description of R. r. alexandrinus except that no. 8909, taken in May, 1901, by F. E. Lutz, has yellowish underparts suggestive of Rattus rattus frugivorous. In the town of Tacámbaro we saw a freshly killed rat of this species which was all black.

Sylvilagus floridanus subcinctus (Miller)

Florida Cottontail; Spanish, Conejo de Florida

Lepus floridanus subcinctus Miller, Proc. Acad, Nat. Sci. Philadelphia, p. 386, October 5, 1899, type from Hacienda El Molino, Negrete, Michoacán.

Sylvilagus floridanus subcinctus, Lyon, Smiths. Misc. Coll., 45:336, June 15, 1904; Nelson, N. Amer. Fauna, 29:180, August 31, 1909.

Remarks.—Nelson (1909:181) records specimens from Acámbaro, Queréndaro and the type locality.

[469]

Sylvilagus floridanus restrictus Nelson

Florida Cottontail; Spanish, Conejo de Florida

Sylvilagus floridanus restrictus Nelson, Proc. Biol. Soc. Washington, 20:82, July 22,1907, type from Zapotlán, Jalisco; Nelson, N. Amer. Fauna, 29:181, August 31, 1909.

Remarks.—Nelson (1909:183) records specimens from Los Reyes, Pátzcuaro and Mount Tancítaro. This species and the Mexican cottontail are favorite small game for the rural peoples.

Sylvilagus cunicularis cunicularis (Waterhouse)

Mexican Cottontail; Spanish, Conejo Méxicano

Lepus cunicularis Waterhouse, Nat. Hist. Mammalia, 2:132, 1848, type from Zacualpan (probably in state of México).

Sylvilagus cunicularis, Nelson, N. Amer. Fauna, 29:239, August 31, 1909.

Remarks.—Nelson (1909:241) has recorded this rabbit also from Pátzcuaro.

Lepus callotis Wagler

White-sided Jack Rabbit; Spanish, Liebre

Lepus callotis Wagler, Naturliches System der Amphibien, p. 23, 1830, type from southern end of Mexican Tableland; Nelson, N. Amer. Fauna, 29:122, August 31, 1909.

Remarks.—Nelson (1909:124) records specimens from Los Reyes and Queréndaro; we did not see any animals of this species in our own field work.

Tayassu angulatus humeralis Merriam

Collared Peccary; Spanish, Jabalí del Collar; Tarascan, cúchjerámba (cucheramba) or Juáteanapu (whatalanapu)

Tayassu angulatus humeralis Merriam, Proc. Biol. Soc. Washington, 14:122, July 19, 1901, type from Armería, Colima.

Remarks.—Under date of October 11, 1948, Henry W. Setzer (in litt.) states that four specimens of this species, in the Biological Surveys Collection in the United States National Museum, were taken at La Salada, by Nelson and Goldman, and bear catalogue numbers 126156, 126157, 126158 and 126159. No. 126158 is a female taken on March 19, 1903. The other three specimens are [470] males taken on March 17, 1903. We did not see any animals of this species in our own field work, and the only materials from Michoacán actually examined by one of us (Hall) are the skulls of nos. 126156 and 126158, referred to above, from the Biological Surveys Collection.

Odocoileus virginianus sinaloae Allen

White-tailed Deer; Spanish, Venado Cola Blanca; Tarascan, Asúni (Ashumi)

Odocoileus sinaloae Allen, Bull. Amer. Mus. Nat. Hist., 19:613, November 14, 1903, type from. Esquinapa, Sinaloa.

Remarks.—Through the courtesy of Dr. A. Remington Kellogg we learn that in a manuscript on the deer of the Odocoileus virginianus group, he and the late Major E. A. Goldman had recorded specimens, in the Biological Surveys Collection of the United States National Museum, as follows: Nahuatzin, 8,500 ft., nos. 35924/48232, and 35925/48233; Los Reyes, 5,000 ft., no. 165673; Pátzcuaro, 7,000 ft., no. 35535/47819; and Uruapan, 4,500 ft., no. 13060. We have not anywhere seen the name combination Odocoileus virginianus sinaloae but from the original description we judge that Odocoileus sinaloae is to be arranged as a geographic race of the wide-ranging species Odocoileus virginianus as that species is now understood.

Dasypus novemcinctus mexicanus Peters

Nine-banded Armadillo; Spanish, Armadillo; Tarascan, Isíngu (Esingŏ)

Dasypus novemcinctus mexicanus Peters, Monatsber. k. preuss. Akad. Wissensch. Berlin, p. 180, 1864 (name restricted by Bailey, N. Amer. Fauna, 25:52, October 24, 1905, to the subspecies occurring at Colima).

Remarks.—The female from Tancítaro is immature as indicated by the wide-open sutures between the bones of the skull which in over-all length is only 72.8 mm. The male from Tancítaro is older and the over-all length of the skull is 98.33 mm. Geographic considerations alone are responsible for our use of the subspecific name mexicanus; we do not know the morphological features which distinguish mexicanus from other named subspecies.

[471]

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Hall, E. R.

1948. Two new meadow mice from Michoacán, Mexico. Univ. Kansas Publ. Mus. Nat. Hist., 1:423-427, 6 figs. in text, December 24, 1948.

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1948. A new pocket gopher (Thomomys) and a new spiny pocket mouse (Liomys) from Michoacán, México. Univ. Kansas Publ., Mus. Nat. Hist., 1:249-255, 6 figs. in, text, July 26, 1948.

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[472]

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1897. Revision of the North American bats of the family Vespertilionidae. N. Amer. Fauna, 13:1-140, 3 pls., 40 figs. in text, October 16, 1897.

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1933. A systematic revision of the marsupial genus Marmosa, with a discussion of the adaptive radiation of the murine opossums (Marmosa). Bull. Amer. Mus. Nat. Hist., 66:1-250, pls. 1-26, 29 figs. in text, August 10, 1933.

Transmitted August 30, 1948.

22-6113

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