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. 



FIG. 366. Harp seal. 



The harp seal (Pagopkilus) (Fig. 366), the ringed seal, 

 the hooded seal (Cystophora) of Greenland and northern 



FIG. 367. Skeleton of a sea-lion, showing how the whole foot rests on the 

 ground, as in the bear family : th, thigh ; /, leg ; A, heel ; /, foot ; , 

 -r>rpr OI-TT> : ft. for^-irm : fn. hand. 



