104 MAMMALIA. 
do the Dog for hunting. That of Java, LZ. leptonyx, Horsf. 
(The Javanese Otter) has a whiter throat, and this whiteness 
ascends on the sides of the head so as to surround the eye. In 
that of the Cape, Z. capensis, Fr. Cuv. the white on the throat, 
sides of the head and neck is purer and more extended ; the end 
of the nose is even marked with it: what particularly distin- 
guishes it, however, is that, at least at a certain age, it has no 
nails, a character on which M. Lesson has founded his genus 
Aonyx. Young individuals however have been brought from 
the Cape that have nails ; it remains to be ascertained whether 
or not they are of the same species. 
Mustela lutra brasiliensis, Gm. (The American Otter.) 
Brown or fawn-coloured ; throat white or yellowish; a little 
larger than the European Otter; the body is also longer, and 
the hair shorter. It is distinguished by the end of the nose, 
which is not naked as in most animals, but is covered with 
hair like the rest of the chanfrin. From the rivers of both 
Americas. 
Mustela lutris, L.; Schreb. CKXVIIL(1) (The Sea-Otter.) 
Size, double that of the European species ; body much elon- 
gated ; tail one-third the length of the body; the hind feet very 
short. There is sometimes white about the head. It has only 
four incisors below, but the molars are like those of the other 
Otters. Its blackish velvet looking fur is extremely valuable, 
to obtain which the English and Russians hunt the animal 
throughout the northern parts of the Pacific ocean. , 
In the second subdivision of the Digitigrada there are two 
flat tuberculous teeth, behind the superior carnivorus tooth, 
which is itself furnished with a large heel. They are car- 
nivorous, but do not exhibit a courage proportioned to their 
powers, and frequently feed on carrion. The cxeum is al- 
ways small. 
Canis, Lin. 
Dogs have three false molars above, four below, and two tuber- 
culous teeth behind each of the carnivori; the first of these upper 
tuberculous teeth is very large. Their superior carnivorus has 
only a smal] inner tubercle, but the posterior portion of the inferior 
(1) This figure, x psentlf drawn from a badly prepared specimen, a an 
exaggerated resemblance 9H the Seal, a circumstance by which some naturalists 
have been induced to believe it should be placed near that genus—its whole or- 
ganization, however, is that of the Otter. See Ev. Home, Phil. Trans. 1796. 
