THE TEETH OF CARNIVOEA. 



387 



In the Bears the teeth are yet further modified to suit 

 the requirements of mixed or vegetable feeders. 

 The dental formula is generally 



3 



The incisors of the upper jaw present the notch across 

 the crown, so common in carnivora, and the outermost is 

 large and not unlike a canine ; the canines are, relatively 

 to the other teeth, not so large as in dogs or Felicia) ; never- 

 theless they are stout strong teeth, upon which the anterior 

 and posterior ridges of enamel are well marked. 



Tho first three premolars are small dwarfed teeth ; the 



Fia. 169 (>). 



first premolar is very close to the canine, and has a crown 

 of peculiar form, produced out towards the canine. 



All four of the premolars seldom persist through the lifc- 



( l ) Teeth of a Bear (Ursus thibetanus). The figure is drawn from a 

 young specimen, in Avhich the canines have hardly attained to their full 

 length. In this bear the four premolars are all persistent. 



c c 2 



