CLASSIFICATION OF ANIMALS. 



THE BRANCH OF VERTEBRATA, OR VERTEBRATES. 

 THE CLASS OF MAMMALIA, OR MAMMALS. 



ORDERS. 



FAMILIES. 



Genera. 



* According to Professor Gill, the old family Phocidae really comprises three families : 

 PHOCID.S: proper, including Phoca, Pagomys, Pagophilus, Erignathus, Halich&rus, 

 Monachus, Cystophora, Mncrorhinus, Lobodon, Stenorhynclius, Leptonyx and Ornma- 

 tophoca; OiARiiDyE, including Otaria, Callorhinus, Eumetopias, Zalopfius, and Apcto- 

 cephalus ; and ROSMARID^, including Rosmarus. 



