44 



able, besides confirming the accuracy of his description, to give a 

 more detailed scale of dimensions than he has given. 



It is desirable to note, that tlus specimeu, although probably fuU- 

 grown, yet exhibits some slight indications of non-maturity. 



The muzzle is a little longer relatively than m the species I have 

 before described, and is about as much pointed as in L. novebora- 

 censis. The end of the nose is small ; the nostrils somewhat tnbular, 

 with a distinct notch between them. 



The ears are triangular-round, and somewhat more pointed than 

 those of any other species here described. The tragus is similarly 

 formed to that part in L. pruinosus. 



The wing-membranes barely extend to the base of the toes, and 

 the extreme tip of the tail is exserted. 



The fur of the forehead does not approach so nearly to the nose 

 in this species as in the others of the group. 



The basai half of the superior surface of the interfemoral mem- 

 brane is hairy, but the hair does not reach laterally over the tibia. 

 Beneath, it is sparingly hairy at the root of the tail only. The 

 membraues of the wings contiguous to the body, both above and 

 below, are hairy, more especially on their under surface, where the 

 hair reaches to the elbow, but does not follow the fore-arm. 



Ou ai] the upper parts the fur is yellowish-buff, the hairs slightly 

 tipped with brovvnish, and on the under parts uniform yellovvish-buff. 



Membranes of the wings darkish brown, the interfemoral mem- 

 brane beiug paler and marked with about twenty transverse dotted 

 lines. 



in. lin. 



Length of the head and body, about . . 2 



of the tail 1 7 



of the head O 8 



of the ears O 3^ 



of the tragus O 2\ 



of the fore-arm 1 7 



of the longest finger 2 7\ 



' of the fourth finger ,. 1 10 



of the thumb O 4 



of the tibia O 8| 



of the foot and claws O 5^ 



of the os calcis O 8 



Expanse of wings 11 6 



In colour this species very closely resembles the lašt, but, besides 

 many minor poiuts of distinction, the great length of the tail in the 

 former will at once be sufficiently distinctive. 



I have now described all the species that I am able with certainty 

 to refer to this group ; but there are two others described by Major 

 Le Conte in the ' Journal of the Academy of Natūrai Sciences of 

 Philadelphia ' for 1855, characterized by the šame formula of denti- 



i 



