CLASSIFICATION 



661 



Fig. 390. Sirenia. 

 (A, from Brehm, B, from Ingersoll. ) 



Group I. Suina. (Swine-like). 



All the swine family come under this heading including the hippo- 

 potamus which is really a,n aquatic hog. 



Group II. Ruminantia? (Ruminants). 



The animals belonging to this group swallow their food rapidly and 

 later regurgitate it into the mouth for further chewing. Such animals 

 are said to "chew a cud." Camels, llamas, antelopes, cows, giraffes, 

 goats and sheep belong here. 



