66 NEW SPECIES OF AMERICAN QUADRUPEDS. 
little blunter than S. hudsonicus ; ears short ; feet 
of moderate size ; the third toe on the fore foot but 
slightly longer than the second. The claws are 
compressed, hooked, and acute; tail shorter than 
the body ; the thumb nail is broad, flat, and blunt. 
The fur on the back is dark plumbeous from the 
roots, tipped with rusty brown and black, giving it 
a rusty gray appearance. It is less rufous than the 
S. hudsonicus, and lighter colored than the S. Town- 
sendii. The feet, on their upper surface, are ru- 
fous; on the shoulders, forehead, ears, and along 
the thighs, there is a slight tinge of the same color. 
The whiskers, which are a little longer than the 
head, are black; the teeth yellowish-white. The 
whole of the under surface, as well as a line around 
the eyes, and a small patch above the nostrils, 
smoke-gray. The tail, for about one-half its length, 
presents on the upper surface a dark rufous appear- 
ance, many of the hairs being nearly black, pointed 
with light rufous. At the extremity of the tail, for 
about an inch in length, the hairs are black, a few 
of them slightly tipped with rufous. The hind feet, 
from the heels to the palms, are thickly clothed 
with short, adpressed, light colored hairs ; the palms 
are naked. The sides are marked by a line of black, 
commencing at the shoulder, and terminating 
abruptly on the flanks ; it is about two inches in 
length and four lines wide. 
Length of head and body, 6 inches 2 lines. 
U 
tail, (vertebne,) 
u including fur, 
ears posteriorly, 
3 “ 6 “ 
5 “ 0 “ 
0 “ 3 “ 
