Range.—Statewide.

Specimens examined, 4: nos. 11377, Univ. Kan., and alcoholic specimens nos. 950-952 B. Villa R. field numbers, I. B. (specimens in Instituto de Biología, Univ. de México), distributed by localities as follows: Hacienda El Sabino, Michoacán, approximately 25 mi. S Uruapan, 1; El Guayabo, 34 kms. S Uruapan, 3.

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)

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.

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