_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 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. _Range._--Known from western part of state. _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. _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.