CARNIVORA. VESPERTILIONID.E. 11 



the upper and inferior parts of the head and body. The remain- 

 ing parts naked, except a few scattering hairs on the toes. Ears 

 large, naked, except near the head, with the tips obtuse, and curv- 

 ing outwards, emarginate on the posterior edge ; tragus nearly a 

 line broad, linear, obtuse, and destitute of hairs. Last joint of 

 the tail free. 



Dimensions. 



in. t'ths. 



Total length, 3 8 



Tail, 15 



Fore arm, 18 



Tibia, 8 



Spread, 11 1, Cooper, Cheirop. U. S. 



Length of skull, .... 08 



Width over the zygoma, . . . 5 



Observations. This species was taken by one of our College 

 students during a warm day in February. The agreement in the 

 characters of this individual is so perfect, that I have not hesitated 

 to notice it as the Carolinensis, though it is not credited to a region 

 so far north as this. Mr. Cooper has frequently procured it on 

 Long Island, and, considering the wide range which the preceding 

 species take, it is to be inferred that this may also be widely distrib- 

 uted. This bat is said to resemble the subulatus, and might be 

 mistaken for it, did not the dental system disagree, the latter hav- 

 ing six molars in the lower jaw, while the former has only five. 

 It is not improbable, that the subulatus is already known to some 

 of the naturalists of Massachusetts, inasmuch as it is credited to 

 New Hampshire by Dr. Pickering. It has not, however, fallen 

 under my notice. 



The noctivagans is another species known in New York, in- 

 habiting more especially Long Island. 



Dental system ; incisors — ^ ; canines -]=-}- ; molars £=£ ; 

 = 34. It has dark black-brown fur, tipped with white on the 

 back, giving it an aspect which at once distinguishes it from the 

 preceding species. It is considered as being more common at 

 the South than at the North. 



The nocturnal habits of the Bats render their investigation 

 somewhat difficult, and probably on this account our known spe- 

 cies are so few in number. 



