152 COMPARATIVE DENTAL ANATOMY 



the canines are mnch reduced, but are strong and 

 are ridged both on the anterior and posterior sur- 

 faces. The premolars are dwarfed and are usu- 

 ally lost early, — seldom persisting through life. 

 The molars are broad and tuberculate, and indi- 

 cate a mixed diet (Fig. 61). 



The Procyonidce includes the Raccoon, Coatis, 

 etc. The teeth are tuberculate and omnivorous in 



Fig. 62. — Teeth of Raccoon (Procyon lotor). 



character (Fig. 62). The canines are sharp, with 

 a posterior cutting edge. The premolars are re- 

 duced to flat crowns with sharp cusps and the 

 molars have sharp cusps, thus showing an insec- 

 tivorous character. 



The Phocidce are the Seals, which have the 

 formula, — 



. 3-3 1-1 4-4 l-i Q « 



*• ^3 c -ui p - m - 4=4 m - n = 3Q - 



The dentition is carnivorous, as they feed upon 



