162 COMPAEATIVE DENTAL. ANATOMY 



There is a monstrous development of the ill- 

 shaped incisors and canines, which are large, 

 blunt, and variously directed, so that their edges, 

 ends, or sides may be worn on different surfaces. 

 They are coarse and tusk-like, and nearly cylin- 

 drical in form. The upper incisors are implanted 

 vertically and the lowers horizontally. The ca- 

 nines are enormous, trihedral in shape, and are 



Fig. 67. — Teeth of Wild Hog {Peccary). 



of persistent growth. The molars have sub-com- 

 pressed conical crowns which have two lobes, each 

 divided into two half crowns, with a crucial de- 

 pression separating the four cusps. Each cusp is 

 formed in a definite trilobed shape which wears 

 into a characteristic trefoil pattern, like the pig. 

 Sometimes the molars are quadrilobate when 

 much worn. 



