Part 4

Specimens examined, 4: nos. 100078-100081, from 2 mi. W PAitzcuaro, 7,700 ft.

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, MurciA(C)lago LengA1/4ilarga

M[=Ischnoglossa]. nivalis Saussure, Revue et Magasin de ZoAślogie, 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.

Range.--Probably middle and higher altitudes through state.

Specimen examined, 1: no. 91911, Univ. Michigan Mus. ZoAśl., from 1050 m., 12 miles (on Huetamo Road) south of Tzitzio.

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 MA(C)xico.

=Artibeus planirostris planirostris= (Spix)

Big Leaf-nosed Bat; Spanish, MurciA(C)lago 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.

Range.--Probably southwestern part of state.

Specimen examined, 1: no. 945b B. Villa R., field no., I.B., El Guayabo, 34 kms. S Uruapan.

Measurements.--Head and body, 89.0 mm.; total length of skull to front of upper canines, 28.0; mastoid breadth, 15.5; zygomatic breadth, 17.8; maxillary width across first upper molars, 13.2; breadth across cingula of upper canines, 7.9; greatest length of one ramus of lower jaw including anteriormost incisor tooth, 19.4; length of upper tooth-row, anterior border of canine to posterior border of M2, 10.4; length of lancet (nose-leaf), 9.0; width of lancet, 6.5; width of horseshoe, 9.0; forearm, 57.3; 3rd metacarpal, 52.6; 1st (basal) phalanx, 16.0; 2nd (middle) phalanx, 26.7; 3rd (distal) phalanx, 18.5; 4th metacarpal, 50.7; 1st (basal) phalanx, 14; 2nd phalanx, 18.8; 5th metacarpal, 54; 1st (basal) phalanx, 11.2; 2nd phalanx, 13.2; lower leg, 22.9; foot with claws, 15.2; calcar, 6.5.

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 MA(C)xico 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, MichoacAin, 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, MurciA(C)lago Zapotero

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

Range.--Known from western part of state.

Remarks.--From MichoacAin, 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 SAugethiere, Suppl., 1:377, 1840, type from MA(C)xico.

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

Range.--Statewide, except rare or absent at higher altitudes.

Specimens examined, 6: nos. 944-949 B. Villa R. field numbers, I.B., El Guayabo, 34 kms. S Uruapan.