256 BULLETIN 57, UNITED STATES NATIONAL MUSEUM. 



its form more resembling that seen in Erinaceus (except for the 

 general outward deflection) than that characteristic of most bats. 

 The angular process is also unusually slender, and is flattened ver- 

 tically instead of horizontally. External characters in general not 

 unlike those of Nyctinomus, but head very noticeably flattened; 

 ears slender, wide apart at anterior base, their anterior margin with- 

 out horny excrescences, the antitragus very obscurely marked off, 

 the keel obsolete, the tragus well developed, not peculiar ; lips slightly 



Fig. 45.— Eumops californicus. Tucson, Arizona. No. 88451. x 2. 



expanded and obscurely wrinkled, thickly set throughout, though 

 especially above, with very short, stiff modified hairs; nostril pad 

 obsolete; dorsal surface of forearm and of third metacarpal thickly 

 sprinkled with minute warty excrescences, a few of which are also 

 present on thumb. 



Species examined. — Platymops wacmillani Thomas. 



Remarks. — Though not distantly related to Nyctinomus this genus 

 is readily distinguishable by the flattened head, the roughened fore- 

 arm, and the peculiarities of the skull and teeth. 



