106 THK MAMMALIA. 



fuse us of the present day (Fig. 5) 

 shows a skull of 19 cm., the skull of Xotothc- 

 rhun MitrhrUi (Figs. 6 and 7) is 46J cm. long, to 

 4(H cm. broad. The breadth is caused by the 

 enormous arch of the cheek-bone. The cheek-teeth 



Fio. 7. Skull of Nototherium, front view. One-sixth natural 

 size. After Owen. 



;nv very like those of 1 )ipr<>tnilnn, and are likewise 

 furnished with transverse ridges, the whole dental 



O f\ K 



formula being the same: i - c - m~. Thestruc- 



105 



ture and form of the teeth point to a plant-eat IT, 

 and not to the habits of a wombat that grubs for 

 roots. 



