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, 65; thumb, 25.4: 
third finger, metacarpal, 58.4; fourth finger, metacarpal, 63.5; fifth 
