OF THE UPPER MISSOURI. 145 
TAMIAS QUADRIVITTATUS, Rich. 
Missouri Sraipep Squirren. Baird, General Report on Mammals, 1857, p. 297. 
Very common in the “ Bad Lands” and rugged portions of the Upper Missouri. It is 
an active little animal, lives on roots and the seeds of various plants, and is similar in its 
habits to the common Striped Squirrel of the States. Range: Upper Missouri to Rocky 
mountains, and west to the Cascade range. Along the Rocky mountains as far south as 
Fort Staunton, New Mexico. 
SPERMOPHILUS FRANKLINI, Rich. 
Gray GopHeR. Baird, General Report on Mammals, 1857, p. 314. 
One specimen of the above species was taken near the mouth of Loup fork. Very rare 
in Nebraska territory. Range: Northern Illinois and Wisconsin, and to Minnesota and 
Saskatchewan. 
SPERMOPHILUS TRIDECEM-LINEATUS, Aud. & Bach. 
SrripeD GoruER. PRaiRiz SquirRet. Baird, General Report on Mammals, 1857, p. 316. 
Abundant on all the open prairies of the Northwest; similar in its habits and actions to 
the prairie dog, though not gregarious; lives on vegetable food entirely, as roots and grass. 
Range: Eastern Michigan to the plains of the Missouri, and south to Red river, Arkansas, 
and Fort Thorn, New Mexico. 
SPERMOPHILUS TowNSENDI, Bachman. 
TOWNSEND’s SPERMOPHILE. Baird, General Report on Mammals, 1857, p. 326. 
A few specimens of the above species were collected near Fort Laramie, and does not 
differ in its habits from the S. tridecem-lineatus. Range: Rocky mountains to the North. 
Crnomys LupDovVICIANUS. 
Prairie Doc. Baird, General Report on Mammals, 1857, p. 331. 
The first village met with in ascending the Missouri is about ten miles below the mouth 
of the Niobrara, on the left side. The largest one I have ever seen is near the Black 
hills, north of the Big Shyenne river. ‘This village, though sometimes interrupted by high 
ridges or hills, is connected, and covers an area of over fifty square miles. The holes are 
usually about ten or fifteen feet apart, sometimes fifty feet, and are connected by well- 
trodden paths, which cross and recross each other like the streets of a city. At the head 
of the Little Missouri river is a village extending about eight miles in every direction. 
Much has been said about the owl and rattlesnake living in harmony with these animals. 
Both species are almost invariably seen about the villages. The owls find the deserted 
holes a convenient place of retreat, and the rattlesnakes doubtless find the dogs to be very 
palatable food. The snakes have been killed with a full-grown dog in the stomach, and in 
VoL. x11.—19 
