MAMMALIA 



369 



slaughtered at this season. The governments of several nations have 

 protected seals in their rookeries, and they are now multiplying satis- 

 factorily. 



Family 2. Trichechidce (Walruses). These are large, heavy-bodied 

 forms (Fig. 190, A) with tusk-like canines in the upper jaws and a 



FIG. 190. Pinniped Carnivora. A, Pacific Walrus, Odobenus obesus; B, Male, 

 and C, female, of Steller Sea-lion, Eumetopias jubata; D, Greenland Seal, Phoca 

 groenlandica. (All redrawn after Fuertes.) 



mustache of heavy bristles on the upper lip. They are Arctic in 

 habitat. On the whole they are more extensively modified for aquatic 

 life than are the sea-lions. 



