Order X. Ghiroptera. 



H. Allen. A Monograph of the Bats of North America, 1864, 2nd 

 ed., iSgj; Bull. U. S. Nat. Mus. IVash., No. 43. 



G. E. Dobson. Catalogue of the Chiroptera in the British Museum, 

 1878. 



G. S. Miller. Revision of North American Bats of the Family Ves- 

 pertilionidcB. North American Fauna, i8<)j. No. ij. 



Fam. I. Yespertilionidae. 



" Bats with turbinal bones folded, bony palate defective ante- 

 riorly, owing to the absence of palatal processes to the premaxillae; 

 molars with promiscuous W-shaped cusps; tail included nearly to tip 

 in large interfemoral membrane; muzzle and nostrils variable, but 

 former never provided with a distinct noseleaf." (Miller.) 



Sub. Fam. I. Antrozoiuae. 

 103. Antrozoiis. 



I. }=1- C. 5=1; P. i=i; M. 1=^=28. 

 2—2' I— l' 2—2' 3—3 



Antrozous. H. Allen, Proc. Acad. Nat. Scien. Phil., 1862, p. 247. 

 Type A. pallidus (LeConte). 

 Muzzle truncate; nostrils surrounded by a horseshoe-shaped 

 ridge; lower lip free in front, mammae 2. 



584. pallidus. {Vespertilio), LeConte, Proc. Acad. Nat. Scien. Phil., 



1855. P- 437- 



Type locality. El Paso, Texas. 



Geogr. Distr. Desert region of eastern California, Nevada, Ari- 

 zona, New Mexico and western Texas. 



Genl. Char. Size large; ears large, when laid forward going be- 

 yond tip of nose; tragus straight and slender, posterior margin faintly 

 crenulate; feet half as long as tibia; wing membranes attached at base 

 of toes; interfemoral membrane at base of terminal caudal vertebrae. 

 Skull: brain case, rostrum and palate broad; teeth large, strong. 



Color. Above pale drab gray or fawn, tips of hairs dusky; face 

 dark brown; beneath grayish white; sides tinged with drab. 



