On the Natural Arrangement of the Genera of Bat. 29 



the number of the grinding teeth, without any other external 

 or zoological character. These I have not adopted; as the 

 front grinders are often deciduous : and their number not being 

 to be seen without destroying the animal, renders them almost 

 useless to the zoologist, and such genei'a certainly do not 

 facihtate the study of zoology. 



Sect. I. ISTIOPHOR^.— Nose furnished with a leaf-like 

 appendage. The teeth acutely tubercular. Index-finger not 

 clawed. 



Fam. 1. RHINOLOPHINA. — Nose.leaf complicated, pierced by 

 the nostrils and with a central lobe ? — Wings large, interfe- 

 moral membrane large. — Index-finger of only one bony pha- 

 lange, the others supplied by cartilage. — Ears moderate, the 

 upper and lower margin of the conch united together, the ante- 

 helix rib-like thin, the lobule spread out. Tragus none ; ante- 

 tragus keeled. — Tail long, enveloped, inflexed. — Cutting teeth 

 small, deciduous, and distant from the canine; lower more 

 crowded. The female provided with pubal as well as pectoral 

 teats. 



1. Rhinolophus, Geoff. Inhabits the Old World. 



Fam. 2. PHYLLOSTOMINA— Nose-leaf simple, pierced by the 

 nostrils, which are generally covered by one or two valves. — 

 Wings large, interfemoral membrane often wanting or large. 

 — Index-finger of two long phalanges. The conch of the ear 

 simple, often very large and united together, the upper and lower 

 margin separated, distant. The antehelix rib-like, the tragus 

 distinct, often serrated ; the antetragus indistinct. — Lobule thin, 

 inflexed. — Tail often wanting, sometimes long. — Cutting teeth 

 2 or 'i above, and 4 or 6 below. Some of the genera have pubal 

 teats. 



* Interfemoral membrane short ; tail none, or short^free. 



2. Phyllostoma. — Ears distant. Cutting teeth |, crowded ; 

 upper two central largest, lateral ones deciduous. Lips 

 fringed. Tongue short. Tail none, or very short, free. 

 — The genera Mo?iophi/llus, Artibeus and Medateus, of 

 Dr. Leach. Diphydia of Spix does not differ from the 

 above. The genus Fampijnis of Geoffroy, only differs in 

 having an additional grinder on each side of the lower jaw. 

 — They are conlincd to the warmer parts of America. 

 The genus Dcsmodus of Pr. Max. (Anim. Braz.) appears 

 only to differ in having the " Museau convert a sa pointc 

 de i)lusieurs crt-tes nasal." 



3. Glossoimiaoa. — Ears distant. Tail very short or 

 none. Lips not fringed; lower cut. Tongue long, bristly. 

 Cutting tcclh \'\ very small. — Found in America. 



