of the Genera of Bat. SI 



the canines, with an intervening space ; the front ones long, co- 

 nical, hinder small, often deciduous; and sometimes entirely 

 wanting ; the lower small, close-set. — Eating insects. 



* Tail inclosed in the interfemoral membrane. 



9. Barbastellus, Gray. — Ears large, united in front. Tragus 

 long. Nostrils with a short membranous crest behind them, 

 and the forehead with a naked erectile ? Longitudinal fold 

 in the skin. 



B. n. s. and perhaps Vespertilio Barbastellus, Linn. 



10. Plecotus, Geoff. — Ears very large, united in front. 

 Nostrils and forehead simple. Tail jointed to the end of 

 the prolonged interfemoral membranes. Cheek-pouches 

 none. — P. auritus. The genus Nycteris of GeofFroy ap- 

 pears to be very like this genus. 



11. Vespertilio, Linn. — Ears separate, conical, lateral. 

 Nostrils simple. Forehead hairy. Tail with distinct ver- 

 tebi'ae to the top of the produced interfemoral membrane. 

 Cheek-pouches large? — The genera Atalapha, Nycticeus, 

 and Hyperodon of Rafinesque depend on the deciduous na- 

 ture of the teeth. The genus Nyctalus of Bowdich ( Voy. 

 Mad. 36), is only a Vespertilio, with ticks in the ears ! and 

 I believe his African Pteropi (p. 221) are only true bats in 

 which he mistook the thumb for the index-finger,as he did in 

 the above genus. — The genus Scotophilus of Leach is a Ves- 

 pertilio, one of the largest species of the genus ; his descrip- 

 tion of the bones of the finger does not agree with Mr. 

 Brookes's specimen. — Inhabits all parts of the world. 



12. FuRiA, F. Cuv. not Limi. — " Ears large, separate. In- 

 terfemoral membrane produced. Tail with distinct verte- 

 bra only half the length of the interfemoral membrane, the 

 rest cartilaginous. Cheek-pouches none." F. Cuv. — In- 

 habits South America. 



* * Tail bare, inclosed, and free on the upper side of the 

 membrane. 



13. Proboscidea, Spix. — Emballonura, Kuhl. ? — "Ears 

 small, lanceolate, distinct, adpressed. Tragus lanceolate, 

 entire. Lobule tubercular. Head acute; nose long. 

 Cutting teeth ^ , upper near the canines. Wings short, 

 wide. Tail half enveloped, end free on the upper sur- 

 face of the short interfemoral membrane; sjnjrs long." 

 Spix. — This genus, which I have never had the opportu- 

 nity of examining, appears to unite the two subllimilies, 



having 



