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TRICHECHUS. WALRUS. 
Generic Character, 
Denies Primores (adulto) nuUi 
utrinque. 
Laniarii superiores solitarii. 
Molares ex osse rugoso utrin- 
que. 
Labia geminata. 
Pedes posteriores compedes 
coadunati in pinnam. 
Fore-teeth (in the full-grown 
animal) none either above 
or below. 
Tusks solitary, in the upper 
jaw. 
Grinders, with wrinkled sur- 
faces. 
Lips doubled. 
Hind-feet, at the extremity 
of the body, uniting into a 
fin. 
A HE genus Trichechus is entirely marine^ and 
contains but very few species : of these the princi- 
pal is the Trichechus Rosmarus, or^ as it is some- 
times called, the Sea Horse^ or Walrus. 
