THE TEETH 



455 



FIG. 371. 



FIG. 380. 



FIG. 378. 



d 



FIG. 381. 



8 



FIG. 382. 



Fig. 371. Et/hitions of the upper and lower cheek teeth. Figs. 372-378, 380, 381. Variations 

 in the second upper premolar. Fig. 379. Second lower prenn>lar. Fig. 382. Upper sert'>rial. 

 a, anterior fang; ,3, posterior fang; }-, inner fang. , anterior hasal cusp; 6, principal cusp; c, 

 posterior basal cusp ; d, heel ; e, inner cusp ; x, areas of wear. 



