MOLOSSID^ 276 



Nyctinomops depressus Ward. (Depressed.) 



NEVADA BAT. 



Size large; two pairs of lower incisors; ears united at their 

 bases ; above dull brown ; below similar but lighter ; males with 

 a small sac in the skin of the throat. 



Length about 140 mm. (5.50 inches) ; tail vertebrc-e 41 

 (1.60) ; expanse of wings 410 (16.15). 



Type locality, Tacubaya, Federal District, Mexico. 

 The Nevada Bat is found in Mexico and the southwestern 

 United States. It must be rare in the United States as the only 

 records that I can find are one each for California, Nevada, Ari- 

 zona and Colorado. It should be readily distinguished by its 

 large size. 



Genus Promops Ge:rvais (Before — Mops.) 

 Size large; no space in the middle between the upper incis- 

 ors ; first upper premolar very small ; lips not wrinkled ; ears unit- 

 ed at base; membranes not furred. 



Promops califomicus M^rriam. 



CALIFORNIA MASTIFF BAT. 



Very large; first upper premolar minute and wedged in the 

 angle between the canine and the second premolar on the outer 

 side of the tooth row ; ears broad, projecting a little beyond the 

 nostrils when laid forward; tragus quadrate, higher than broad; 

 a glandular swelling in front of each eye; color sooty brown, paler 

 below, the bases of the hairs everywhere pale drab gray. 



Length about 162 mm. (6.38 inches) ; tail vertebrc-e 60 

 (2.35) ; free part of tail 13 (.50). 



Type locality, Alhambra, Los Angeles County, California. 



California Mastiff Bats are rare. They are known only from 

 southern California. They have been found over a door, behind a 

 signboard, hanging from a window ledge and in a tunnel. All 

 dates known to me are in winter. 



