MAMMALIA. 



21 



From the imperfect state of the specimen, I was inclined, at first, to consider 

 it as a species of Arctibeus, but, the peculiar character which it exhibited in the 

 formation of its thumb, and the freeness of the feet, compared with the other 

 species of that genus, induced me to relax the specimen afresh, when it proved to 

 be a Carollia, and, at once, showed the advantage of separating that genus. 



The hair of the back is blackish at the base, with a broad pale sub-terminal 

 band, and dark brown tips, that of the under side has a much narrower pale band. 

 The wings are dark brown, and the lower part of the under side of the forearms 

 is covered with hair like the body. 



In. Lin. 



Length of the body and head 2 



fore-arm 1 4 



thigh bone 6J 



In. Lin. 



Length of the heel bone 4 



foot 5\ 



thumb ...0 5£ 



STURNIEA. 



Sturnira, Gray, Ann. and Mag. Nat. Hist. 1842. 257. 



The tail and interfemoral membrane wanting. Nose-leaf lanceolate, simple. Tragus distinct. 

 Inner surface of the lips bearded on the sides. Hind feet large, free, the wing arising 

 from the hinder part of the ankle ; heel-bone none ; thumb large. The lower lip with a 

 single large wart, surrounded by a series of smaller ones. Males? with a tuft of hairs on the 

 side of the neck near the base of the wings, like an epaulet. 



This genus is easily known from Arctibeus by the narrowness of the inter- 

 femoral membrane, which is completely hidden by the hair of the legs, while in 

 the latter genus it is well developed, but not notched out in the centre. It differs 

 from Anoura, Gray, by the shorter face and the absence of the deep groove on 

 the lower lip, and from Monophyllum, which also has the groove on the lower lip, 

 by the absence of the tail. It has much the general external form of Desmodus, 

 but differs from that genus in having a lanceolate erect nose-leaf. 



The tuft of hair above the base of the wings is found also in the Epomophori 

 among the fruit-eating Bats, and also in some of the Taphozoi among the Noc- 

 tilionina. They are generally distinctive of the male sex, and secrete an unctuous 

 fluid. 



