138 



simple, with bi-tuberculated nostrils. The lower jaw rather shorter 

 than the upper. 



Incisors in the upper jaw 4, in pairs, of which the two inner ones 

 are the larger ; the two outer ones smaller, and approximate to them. 

 In the lower jaw 6, very small and approximate. Laniares (?) ^^ ; 



i 4-4 



molars 7—7. 

 4—4 



Ears moderate, smooth, subovate ; tragus semiorbicular. Wings 



large and dark brown. The fur everywhere soft, fine, and rusty 



brown. 



Length from the end of the nose to the root 



of the tail 2 inches. 



Length of the tail 1 j 3 ^ ,, 



Expanse of wings 10^ „ 



Fam. Noctilionina. 



Genus Mystacina, Gray. 



Body very short and broad. Snout much produced ; nostrils sub- 

 lateral, surrounded by a thickened projecting rim. Under jaw much 

 shorter than the end of the nose. Top of the head considerably ele- 

 vated ; ears lateral, simple ; tragus long, narrow, and pointed. 

 Wings moderate ; thumb moderate. Index finger with two pha- 

 langes, second finger with four, third and fourth fingers with three, 

 each. Wing-membranes extending to the distal extremity of the 

 tibia. Legs and feet short and stout. Tail very short, piercing the 

 interfemoral membrane near to its base, and projecting on the upper 

 surface of it, as in Taphozous. Interbrachial membrane, a narrow 

 piece of membrane beneath the fore-arm, that adjoining the sides of 

 the body, and that enclosing the tibia, as well as the basal portion of 

 the interfemoral membrane, thick and leathery, with numerous deep 

 wrinkles or corrugations on its upper surface. Incisors, two in the 

 upper jaw, large, contiguous, and shaped like canines ; in the lower 

 jaw two, small, and placed in front of the canines. 



1. Mystacina tuberculata, Gray. (PI. L1V.) 



Mystacina tuberculata, Gray, Cat. Mam. Brit. Mus. p. 34, 1843 ; 

 Gray in Deiffenb. Journ. App. p. 296, 1843 ; Gray, Zool. Voy. Sul- 

 phur, No. II. p. 23, 1843 ; Zool. Voy. Erebus and Terror, No. IV. 

 pi. 22. 1844. 



The snout of this singular-looking species is considerably elongate d 

 with the end of the nose emarginate between the nostrils, which are 

 very prominent, and directed sublaterally. The mouth is placed far 

 back in relation to the nose, and a space intervenes between the two, 

 which is clothed with very fine short hairs. The hairiness and form 

 of this space are somewhat similar to the same part in the Coati 

 Mondi. No very strongly-marked peculiarity is observable in the 

 mouth itself, but it is rather small, and has only the extreme edges 

 of the lips destitute of hair. 



