CARNIVOROUS QUADRUPEDS. 147 



1. Ph. vitulina. Common Seal. 



2. Ph. (jTwnlandica Greenland Seal. 



3. Ph. barbate. Great Seal. 



4. Ph. Gryphus. Gjey Seal. 



n. TRICHECHUS. WALRUS. Tusks and incisors 

 wanting in the lower jaw ; tusks in the upper ex- 

 tremely large and directed downwards ; grinders 

 short and truncated. 



i. T. Rosmarus. Walrus. 



