FIELD BOOK OF MAMMALS 



Very little is known of the habits of this Bat which is the 

 rarest of all the Bats found in the United States. The few 

 specimens secured have been taken under unusual circum- 

 stances, the type specimen was found on a fence, the second 

 specimen, taken thirteen years later, was found dead in a bio- 

 logical laboratory, and another specimen was found dead lying 

 in a puddle formed by an overflow from a railway water tank. 

 Apparently there is something peculiar about its hours or 

 place of flight to account for the fact that this Bat is not seen 

 flying at dusk with other Bats and is only taken as the result of 

 some accident. 



The large ears, and peculiar black and white color pattern, 

 at once distinguish the Spotted Bat from all other North 

 American Bats. 



Genus Corynorhinus^ 



Dentition: Incisors, f ; Canines, 1; Premolars, f ; Molars, # = 36. 



Lump-nosed Bat. — Corynorhinus rafinesquii 



and related forms 



Names. — Lump-nosed Bat; Big-eared Bat. 



General Description. — A good-sized Bat with peculiar 

 lump-like, warty outgrowth on muzzle, and very large ears. 

 Ears much longer than head, joined across forehead, tips 

 narrow; tragus long and slender; nostrils opening upward and 

 surmounted by prominent glandular masses ; tail less than half 

 total length of animal; interfemoral membrane wide; pelage 

 soft and color pattern simple. 



Color. — Sexes colored alike. 



Clove-brown on back, wood-brown on sides; whitish at base 

 of ear ; underparts pale pinkish buff ; pelage everywhere gray or 

 slaty gray at base, not strongly contrasted with color on tips 

 of hairs. 



Immature pelage dark hair-brown to fuscous above, pale 

 hair-brown below, dirty whitish on abdomen. 



Measurements. — Sexes equal in size. Total length, 4.3 

 inches; tail vertebrae, 2 inches; hind foot, .48 inch; wing 

 expanse, 12.8 inches. 



^ For a full revision of this genus see G. M. Allen, Bulletin Museum 

 Comparative Zoology, Vol. LX, pp. 333-356, 1916 



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