MOERITHERIUM. 



17 



In the lower jaw (figs. 6 & 7 C) the middle incisors (i 1) are 

 small, the second pair (/ 2) large and tusk-like ; both are 

 directed forward and their upper surface continues forward the 



oo 



surface of the spout-like anterior portion of the jaw. The third 

 incisors, the canine, and the first premolar of the full dentition 

 are wanting. The remaining three premolars (pm.), which re- 

 place milk-molars, are simpler than the molars, and only in the 



c 



