106 MR. R. F. TOMES ON THE GENUS VAMPYRUS. [MaV. 26, 



First upper premolar much smaller than the second. 

 First lower premolar much larger than the second, which is small 

 but not compressed, and is in the same line with the other teeth. 



Ex. LoPHOSTOMA SYLVicoLUM, D'Orb.Voj. Amer. merid. Mam. 

 p. ll.pl, 6, 1847. 



Obs. As far as I can judge, without having examined a specimen, 

 this species must be intimately allied to the so-called Schizostotna ; 

 but it is clearly a more typical Vamjji/rus, as the presence in the 

 lower jaw of only two incisors, and the smaller size of the second 

 premolar, sufficiently indicate. 



E. (Mimon, Gray.) 



General proportions of body and limbs more like those of Phyl- 

 lostoma than in any of the foregoing species. Ears large, ovoid and 

 rather pointed ; tragus elongate. Nose-leaf very long and pointed ; 

 its front, or horse-shoe part, more closely applied to the nose and 

 somewhat broader than in Vampyriis. Lower lip with a smooth 

 triangular space in front. Interfemoral membrane rather ample. 

 Tail as in Phyllostoma and LoTphostoma. Wing-membrane not ex- 

 tending beyond the extremity of the tibia, as in Lophostoma. 



Dentition. — Incisors -^ ; premolars ^. 



First upper premolar much smaller than the second. 



First lower premolar somewhat smaller than the second, which 

 corresponds with the third in the species we have been considering, 

 the small or intermediate one being in this species absent. 



Ex. Phyllostoma elongatum, Geoif. 



P. bennettii. Gray, Mag. Zool. Bot. ii. 1838. 

 Mimon bennettii, Gray, P. Z. S. 1847, p. 14. 



Obs. A specimen in my own collection has been taken to the 

 British Museum and found to be identical with the Phyllostoma ben- 

 nettii of Dr. Gray ; afterwards to the Leyden Museum, and found 

 to resemble the P. elongatum of that collection ; and finally compared 

 with the type of P. elongatum in the Paris Museum, and proved to 

 to be identical with it. 



This species may be said to approximate in its dentition, and in 

 some measure in the degree of development of some parts of its 

 cutaneous system, the restricted Vampyrus, the general outline at 

 the same time retaining considerable resemblance to Phyllostoma. 

 M. Gervais erroneously gives four lower incisors to this species. 



F. {Tylostoma, Gerv. ; Vampyrus, Spix.) 



General form and proportions much as in Phyllostoma, but the 

 development of membrane slightly more ample. Ears rather larger, 

 but of smaller size than those of the preceding species. Wing-mem- 



