PLATE X. 



All figures three-fourths natural size. 



Apltelops. 



Lower left molars. 



Second lower right premolar. 



First lower right premolar. 



Second lower left molar, httle worn. 



Lower left molar. 



Aph el ops iiialacorh in its . 

 First upper left molar. 

 Second upper right premolar. 

 Third upper left premolar. 

 Fourth upper left premolar. 

 First upper left molar. 

 Second upper left molar. 



