CHROTOPTERUS. 



657 



FIG. 136. CHROTOPTERUS AURITUS. 



No. 5845 Field Columbian Mus. 

 Twice nat. size. Nose view enlarged 6 times. 



very small and about on a level with the gum ; second lower premolar 

 smaller than the first. 



Color. Above dark brown, base of hairs whitish; beneath grayish 

 brown; paler at base. 



Measurements. Total length, 106.6; forearm, 85; thumb, 25.4; 

 third finger, metacarpal, 58.4; fourth finger, metacarpal, 63.5; fifth 



