SEALS. 29 
times chaffy and callous with wear). Muffle hairy to the 
edge and between the nostrils. Grinders =. 
Phocacéerna, $2, part., Nilsson, Scand. Fauna; Wiegm. Arch. vii. 
oh. 
Phocina, part., Turner, Proe. Zool. Soc. 1848, 88. 
Subfamily 3. Trichechina. Muzzle large, truncated, simple ; 
canines large ; grinders lobed or truncated when old. 
Cet, part., Gray, Ann. Phil. 1825, 346. 
Trichechina, Gray, Zool. Erebus & Terror, 3. 
Trichecina et Phocina, part., Turner, P. Z. S. 1848, 88. 
Trichechide, Gray, Ann. Phil. 1825, 340. 
Trichehidz seu Campodontia, J. Brookes, Cat. Mus. 37, 1828. 
Les Morses, F. Cuvier, Dict. Sci. Nat. lix. 465 ; Dent. Mam. 233. 
9. HALICHG@RUS. 
Muzzle broad, rounded; cutting teeth ¢, grinders =, conical, 
the hinder two upper and one lower double-rooted, rest simple, 
canines moderate ; whiskers crenulated; muffle hairy, becoming 
baldish with age; palm and soles hairy; claws 5-5, elongate. 
Palate of skull with a narrow rounded notch behind; lower edge 
of lower jaw rounded, not dilated or inflexed in front. 
Fig. 10. 
Halichcerus griseus. Skull. 
