VESPERTILIONID^E 



263 



Genus Antrozous Allien. (Cave — animal.) 

 Ears not joined at base; muzzle l^lunt ; lower lip free. 

 Dental formula, I, 1—2 ; C, i— i ; P, 1—2 ; M, 3—3X2=28. 



Antrozous pallidus Lecontk. (Pallid.) 



PALE BAT. 



Size large; ears large; tragus slender, nearly straight, a little 

 less than half as high as the ear conch ; interfemoial membrane of 

 moderate size; wings broad; back pale drab gray, most of the 

 hairs with faintly dusky tips; below grayish white, tinged with 

 drab on the sides. 



Length about no mm. (4.33 

 inches) ; tail vertebrre 40 ( 1.60) ; 

 ear fromi crown 25 (i). 



Type locality, El Paso. Texas. 

 The pale Bat is found from 

 western Texas through the arid 

 region of the Sierra Nevada and 

 San Bernardino Mountains. They 

 do not seem to be common any- 

 where. 



Antrozous pallidus pacificus AIerriam. 



PACIFIC PALE BAT. 



Averaging larger than pallidus; darker; above brownish 

 white more or less heavily tipped with sq^ia or drab, a patch on 

 the back of the neck and sometimes one on the rump with little 

 or no dark tips to the hairs ; below buff or brownish buff. 



Type locality, old Fort Tejon, California. 



Pacific Pale Bats appear to be generally distributed along 

 the Pacific coast west of the Cascade Mountains and Sierra Ne- 

 vada from the Columbia River south to Cape St. Lucas, in the 

 valleys, foothills, and lower mountains. They do not appear to 

 be common. The voung are born about the first of Ju . 



