20 FAUNA AMERICANA. 



15/ Division, Vespertilio, Geoff. 



CHAKACTEHS. 



Dental formula.— Teeth 32.« 



C Incisor 2. 

 superior 14. < Canine 2. 



C Molar 10, 



f" Incisor 6. 

 inferior 18. < Canine 2. 



C Molar 10. 



Superior incisors very separate from each other, 

 and very near to each canine ; four false molars, 

 six true in each jaw; the anomalous false molar 

 has a small tubercle placed at the internal border 

 of the base of the canine. The species hitherto 

 observed, are the Vespertilio lasiure, V. novebo- 

 racencis, V. paradoxus, and probably also the V. 

 prtiinostcs. 



Species. 



1. Vespertilio noveboracensis. New-York bat. 

 Penn. Syn. p. 367, tab. 31, Jig. 2. Linn. Gmel. 



Char. Essent. Ears short and broad, rounded; 

 tail wholly enveloped in the interfemoral mem- 

 brane. 



Dimensions. Total length two inches five-tenths; 

 tail nearly two inches ; spread of the wings more 

 than ten inches. 



Description. Nose short, pointed ; body brown 

 above, pale beneath ; a white spot at the base of 

 the wings. 



Note. This species is one of the two on which 

 Rafinesque has constructed his new genus " Ata- 



