MAMMALIA. 343 
general color is a dark, slaty gray, and their maximum 
length about five feet. The young, generally two at a 
birth, are white or a light yellow, a provision that renders 
them inconspicuous on the ice. 
Fic. 366.—Harp seal. 
The harp seal (Pagophilus) (Fig. 366), the ringed seal, 
the hooded seal (Cystophora) of Greenland and northern 
Fic. 367.—Skeleton of a sea-lion, showing how the whole foot rests on the 
ground, as in the bear family: 24, thigh; 4, leg ; %, heel; /, foot; 2, 
upper arm ; /2, fore-arm ; ha, hand. 
