NORTH AMERICAN BATS. 



4 1 

 Molars — Canines — 



5 1 



Incisors 



Dentition. 

 4 



Canines 



Molars _ = 32 teeth. 

 5 



Upper Jaw. — The central incisors are large, converging, 

 irregularly bifid — the internal cusp being the longer ; the laterals 

 not more than one-third the length of the centrals. Canines 

 unicuspid, with minute basal cusps. First molar narrower than 

 the other three, answering to the third premolar of Vespertilio. 



Lower Jaw. — Incisors 6, trifid, crowded. Canines large, 

 simple. Molars 5, the first two smaller and simple, increasing in 

 size from the canines. Molars proper not peculiar. 



I feel some hesitation in separating S. carolinenais from S. 

 fuscus. They may yet prove to be the same, in which case S. 

 caroUnensis must be considered a synonym of S. fuscus. 



Measurements. 



List of Specimens. 



