40 ZOOLOGY. 



bivorous and granlvorous ; and the twa< last feed 

 principally on vegetables, but occasionally on animal 

 substances. 



1. Equus. Horse. Upper /ro«i ieeth six, erect, parallel; 



the lower six more prominent j tusks solitary, remote ; 

 teats inguinial ; feet hoofed. 



Several species of this genus contribute largely to the 

 comforts and convenience, and are of inestimable value to 

 Mankind. In a wild state, they are all natives of the 

 hottest parts of the globe, associating in large herds, they 

 usually resort to open plains, and feed entirely on herbage ; 

 they are exceedingly shy and swift, and are taken with 

 great difficulty. 



2. Hippopotamus. River-horse. Front teeth in each javp 



four, the upper in pairs, remote ; the lower prominent, 

 •with the intermediate ones longer ; tusks solitary, the 

 lower ones very long, obliquely truncate, recurvate; 

 feet hoofed at the margin. 



This is a solitary species, inhabiting large rivers and 

 lakes, principally in the interior of Africa ; it only quits the 

 water in the evening to feed, when it commits con- 

 siderable damage to Rice and other plantations in the 

 vicinity of its haunts ; its pace on land is slow and heavy, 

 but in the water it is very active, and walks with the greatest 

 ease at the bottom of the water, its bulk is prodigious, 

 frequently equalling that of the Elephant ; it feeds on Sugar 

 canes, Rice, and other vegetable substances ; is lonely in its 



