178 PHILOSOPHY OF ZOOLOGY. 



1. Such as have no tail, as Vespert'dio spectrum o/^Lin. 



2. Such as have the tail united with the intertemoral mem- 

 brane, as Ph. hastatum. 3. Such as have a tail free from 

 the interfemoral membrane, as Ph. cremdatum. To these 

 may be added the Glossophaga of Geoffroy, represented by 

 the Vesp. soricinus of Pali-as. 



Nose simple. 



(a.) With a tail. 



23. MoLossus. Two incisors in each jaw. Upper lip 

 simple. The species of this genus, which are numerous, 

 were confounded under the Vesp. violossiis of Gmel. 



24. Nyctinomia. Four incisors in the lower jaw. Up- 

 per lip deeply notched. 



{h.) No tail. 



25. Stenoderma. The interfemoral membrane inter- 

 rupted at the coccyx. Two incisors in the upper jaw, and 

 four below. 



(B.) One bony joint in the fore-finger, and iwo in the rest. 



Nose zaith appendages. 



(a.) With a tail. 



Tail extending beyond the interfemoral membrane. 



26. Rhinopoma Geof, Forehead with a shallow pit. 

 Nostrils with an obscure plate above. Ears reunited, R. 

 tnicrophyllus. 



Tail included in the interfemoral membrane. 



27. Rhi>jolophus. Nostrils with a complicated mem- 

 brane like a horse-shoe. Incisors two above, in a cartila- 

 ginous intermaxillary bone, and four below. Rh. ferrum 

 equmum. 



28. Nycteris. Forehead with a pit. Nostrils with a 

 cij'cle of projecting plates. Incisors, four above and six 

 below, N. hispidus. 



