112 SKETCH OF THE HJSTOUY OF MAMMALIA. 



i- / 



69.— Teeth of Hystrix. 



present tortuous folds of enamel (see Fig-. 69, the teeth 

 of Hystrix, and Fig. 70, the teeth of Erethizon). The 

 tongue is rough with papillae, like those of the cats ; the 

 head is short and blunt ; the nostrils large and open ; 

 the ears and eyes comparatively small ; and the general 

 form thick and clumsy. 



