100 
THE SEWELLEL. 
rather far back, and is short and rounded ; it rises about four lines above 
the auditory opening, has a small fold of the anterior part of its base 
inwards, together with a narrow thick margin, representing a lobe. There 
are also folds and eminences in the cavity of the auricle ; the ear is clothed 
on the outer surface with short and fine hairs, and on the inner, with 
hairs a little longer ; tail, short, slender, and cylindrical, and almost 
concealed by the hair of the rump ; legs, covered down to the wrists and 
heels with short fur ; feet, shaped like those of the marmots ; palms and 
under surfaces of the fore feet, naked ; there are three small callous 
eminences at the roots of the toes, disposed as in the marmots, one of them 
being common to the two middle toes, one proper to the third toe, and the 
other to the little toe. 
At the root of the thumb there is a large prominent callosity, and on the 
opposite side of the palm another one nearly the same size ; the thumb is 
of sufficient length to be used in grasping, and is terminated by a smooth 
rounded nail ; claws, large and very much compressed, slightly arched 
above, and nearly straight below ; hind feet, more slender than the fore 
feet, and their claws one half smaller, rather more arched, and less com- 
pressed ; soles, longer than the palms, and naked to the heel ; they are 
furnished with four callous eminences situated at the roots of the toes, and 
two placed farther back, all more conspicuous than those on the hind feet 
of the spermophiles of America. 
The hair is soft, and somewhat resembles the finer fur of the muskrat ; 
the under fur is soft, tolerably dense, and about half an inch long ; the 
longer hairs are not sufficiently numerous to conceal the under fur. The 
hair on the feet only reaches to the roots of the claws, which are naked. 
A specimen of a young Bewellel brought by Douglas and examined by 
Richardson, in which the dentition was the same as in the adult, exhibited 
a new set of molar teeth, which had destroyed the greater part of the sub- 
stance of the old teeth, leaving merely a long process before and another 
behind in each socket, resembling fangs. 
COLOUR. 
Incisors, yellow ; claws, horn colour ; general hue of the back, brownish, 
the long scattered hairs being tipped with black ; belly, grayish, with 
many of the long hairs tipped with white •; nose v nearly the colour of the 
back ; lips, whitish ; in some specimens there is a spot of pure white on the 
throat. 
The hairs on the back, when blown aside, exhibit a grayish colour from 
the roots to the tips, which are brown. 
