330 FAUNA ANTIQUA SIVALENSIS. 



Upper canines very large and thick : incisors six ; outer with a broad 

 top ; middle very much compressed across ; they are very much and 

 flatly worn ; so also are the canines, but unequally on the opposite sides, 

 the left being groimd nearly to the level of the incisors ; the converse 

 with like characters in lower jaw, left canine being most worn. 



The form of the skull differs much from Hycenarctos ; it is much 

 broader, deeper, shorter, and thicker. The Sewahk form is more elon- 

 gated in every direction. 



This difference is strongly shown in lower jaw. The Sewalik is thin 

 and high ; the American fossil is thick and massive. The American was 

 a lai'ger form, and was probably more heavy and less lithe. 



From the very decided flat grinding of the teeth, the American fossil 

 was probably a vegetable feeder ; the Indian was evidently an animal 

 feeder. 



