54 



NORTH AMERICAN BATS. 



Fur thicker behind than before, and extending a slight distance 

 on the interfemoral membraue. Color kistrous light chestnut- 

 brown above ; same color of a lighter shade, inclining to yellowish, 

 below. The base of the fur above and below is of a delicate fawn 

 brown. 



The dentition is the same as in V. evotis — the incisors being of 

 the same length, the laterals bicuspid. 



V. affinis resembles S. georgianus in being about the same 

 size, and in the fur and membranes presenting the same general 

 appearance. It differs from that species in having the ear more 

 emarginated on the outer border ; the tragus not blunt, nor so 

 wide proportionately ; the face more hairy, and not so depressed ; 

 the reddish hue of the hair more decided ; the fur thicker and 

 less wavy. The dentition differs in there being § molars, instead 

 of |. V. affinis has also a narrower interfemoral membrane, and 

 a marked calcaneal lobe. 



To V. yumanensis it bears some resemblance in the shape and 

 extent of the interfemoral membrane, and shape of tragus ; but 

 the differences in the pelage, and the color and texture of the 

 wing membranes separate them. 



Fig. 50. 



v. afflnis. 



