Striped Spermophile 
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and it is said that it is nearly a month before their eyes open 
and their hair comes. They get very fat toward the fall in 
preparation for their winter sleep which commences in Octo- 
ber. Whether they are dormant all the winter appears to be 
doubtful, but there is always an accumulation of food in their 
burrows. Some interesting observations on their hibernation 
have been published by Dr. P. R. Hoy {Proc. Amer. Ass. 
Adv. Set., 1875, p. 148). He examined a completely torpid 
spermophile on December 15 th and found the temperature of 
the abdominal cavity only 58 °; the heart was beating only 
four times a minute, each beat taking about four seconds to 
complete; there was no sign of respiration, and the circulation 
was so feeble that hardly any blood issued from an amputated 
limb; the stomach and bowels were completely empty and 
there was a thick layer of fat over the body. An examination 
of the amount of soluble albumen in the muscles in the fall 
and in the spring showed that there was a great falling off 
in this respect during the winter. 
Citellus tridecemlineatus parvus (Lat. parvus, small). 
Little Striped Spermophile. 
S pernio philus tridecemlineatus parvus Allen, Bull. Am. Mus. N.H., 
vii., p. 337 (1895). 
Type locality. — Uncompahgre Indian Reservation, northeastern 
Utah. 
Measurements. — Total length, 8.0; tail vert., 3.0; hind foot, 1.12. 
Description. — Marked and colored like the preceding, though in 
specimens in the Warren collection the markings do not seem to 
be quite so sharp. A specimen taken five miles west of Snake River, 
Routt County, June 2 2d, is rather grayer in tone, while some taken 
at Mud Springs, Garfield County, 8,850 feet, July 14th, are a darker 
richer brown than any specimens of pallidus in the same collection. 
Distribution. — This subspecies is somewhat irregularly and pe- 
culiarly distributed in Colorado. It is found in the desert portions 
of western Routt and in Rio Blanco counties. It has been met 
with from near the Wyoming line, in the Snake River watershed, and 
through that region and west to Utah. It is found in Rio Blanco 
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