times tinged with brown. The cheeks, sides of thé neck, and exterior parts of the fore and
hind extremities, have more or less of a chestnut-brown hue. The crown of the head is
brown, mixed with a little gray, and is darker on the msesial line- The ears are brown on the
margins, but pale elsewhere. There is a white circle round the eye. The nose and forehead
are pale yellowish-brown, and the upper lip and chin are nearly white.
The tail is depressed or distichous, nearly linear, being only very slightly broader towards
the tip. It is black above, with an intermixture of brownish-white hairs, and is bordered
with the latter colour; yellowish-brown beneath, and margined with black and brownish-white.
The feet are shaped like those of the four preceding spermophiles. The claws are much
longer and better fitted for digging than those of . the Sciurus Lysteri or quadrivittatus.
The thumb-tubercle is far back, and has a small, obtuse nail. The hind soles are naked to
the heel, as are also the palms, and under surface of the toes. The upper surfaces of the feet
are covered with short, yellowish-white hairs, which scarcely reach beyond the roots of the
black claws.
D im e n s i 'öh s
O f p r e p a r e d sk in s .
Inches. Lines. Inches. Lines.
b o d y a n d h e a d , f rom ^ 9 to 8 6
h e a d a lo n e ' . 2 2
n o s e to a u d ito ry o p e n in g . 1 8
t a i l (v e rteb ra e ) 2 9
, , in c lu d in g f u r . . 3 9
m id d le f o r e -d aw 0 H
L e n g th , o f p a lm a n d m id d le fo re -c law
, , h in d -so le a n d m id d le -c law
- „ h in d m id d le -d aw
H e ig h t o f e a r . .
B r e a d th o f b a se o f e x te r n a l e a r .
Inches. Lines.
. 0 11
1 6
. 0 2 *
0 4
. 0 5