No. i.] Allen on Mexican Mammals. 1 77 



12. Atalapha cinerea (Beauv.).QKe specimen, male, Hidalgo 

 San Marcos, Tonila, Jalisco, Dec. 5, 1889. Apparently not 

 different from California examples. (See also this Bulletin, II, 

 p. 165.) 



13. Vespertilio llicifugUS Le Conte. One specimen, male, 

 Sierra de Colima, Jalisco, December 6, 1889. 



14. Yespertilio nitidus H. Allen. Two specimens, males, 

 Sierra "de Colima, Jalisco, Dec. 6, 1889. These specimens appear 

 to be not typical, either in size or color, and their, reference to 

 this species is provisional. 



15. Yespertilio velifer, sp. nov. 



Size of V. albescens, with nearly the coloration of V. nitidus, and the ears 

 of V. subulatus. 



Above basal two-thirds of the fur blackish, passing into dark broccoli brown 

 at the surface ; below much paler, the surface pale buffy gray. Pelage full and 

 soft, extending on the membranes about as in V. lucifugus. Ears of medium 

 size, similar in general form to those of V. subulatus, but rather narrower and 

 more attenuate at the tip, the upper posterior third distinctly hollowed, the lower 

 third abruptly much expanded ; tragus long, rather narrow, fully or rather more 

 than half the length of the ear, the front border nearly straight, the posterior 

 border slightly rounded as far as a little beyond the middle, then sloping gradu- 

 ally to the rather narrow but rounded tip, with a distinct notch opposite the 

 anterior base. 



Wings from the base of the toes ; calcaneun strongly developed ; feet large ; 

 thumb short, stout, with a rather thick claw ; tip of last caudal vertebra free. 



Length of head and body (measurements from dry skin), 44 mm. ; tail, 33 ; 

 ear from base of inner margin, 14 ; tragus, 9 ; forearm, 42 ; thumb, 8 ; third 

 finger (metacarpal, 38 ; ist phal., 13 ; 2d phal., 12 ; 3d phal., 10), 73 ; tibia, 

 17 ; foot, n. 



Skull broad, rather short ; basilar length 14; total length, 16 ; greatest width, 

 10.5 ; lower jaw (front border to condyle), 13. First upper premolar about 

 twice the size of the second, both placed on the inner border of the tooth row. 



Type, 2696, $ ad., Sta. Cruz del Valle, Guadalajara, Jalisco, Sept. 7, 1889, 

 Dr. A. C. Buller. 



Three specimens, one male and two females, and six additional 

 skulls, Sta. Cruz del Valle, Guadalajara, Jalisco, Sept. 7 and 8, 

 1889. 



These specimens agree very closely in size and coloration, and 

 in all other characters, and represent an apparently new species, 



