802 MONOGRAPHS OF NORTH AMERICAN RODENTIA. 
single black specimen of J. striatus I have seen was also marked on the 
throat with a longitudinal stripe of white, but was elsewhere wholly black, 
GEOGRAPHICAL DISTRIBUTION.—The most easterly points from which I 
have seen specimens of this species are the northern shore of Lake Superior 
and Nelson’s River, Hudson’s Bay Territory. To the northward it ranges 
nearly to the Barren Grounds.* In the United States, it is met with all along 
the forty-ninth parallel; it is common in the Bad Lands of the Upper Mis- 
souri and Yellowstone Rivers, in the Black Hills of Dakota, and in the eastern 
foot-hills of the Rocky Mountains southward to New Mexico. It is repre- 
sented by some one of its forms’ thence westward to the Pacific coast, and 
as far southward as Arizona. In respect to the distribution of the several 
varieties, little need be said in addition to the remarks respecting their habi- 
tats already given. The ranges of vars. pallidus and quadrivittotus curiously 
interblend, the latter occupying the wooded mountain-ranges of the Rocky 
Mountain plateau, while the former occurs generally over the sterile plains 
and desert areas from the Great Plains east of the Rocky Mountains to the 
Great Basin. Kast of the Missouri, the species appears to occur only in 
Northern Minnesota and Northern Dakota, its range gradually extending 
southward west of the Missouri. In the Upper Missouri country, Dr. Coopert 
found them in the Bad Lands fifty miles west of Fort Union, and at the 
eastern base of the Rocky Mountains. I found them also common in the 
Bad Lands of the Yellowstone River, { and even as far eastward as the Little 
Missouri, and they occur doubtless thence westward to the Rocky Mountains, 
wherever there is shrubbery. 
In the Old World, this species ranges from the shores of the Okotsk 
Sea westward over the whole of Northern Asia, and to the Dwina River in 
European Siberia. According to von Schrenck, it occurs on Saghalien Island, 
as far southward on the mainland as Hadshi Bay, in lat. 49°, and in the inte- 
rior along the whole course of the Amur River and its tributaries. The 
same writer states that Temminck obtained it in Japan. 
* Respecting its range in the Fur Countries, Mr. Donald Gunn observes :—“ I have not seen any of 
them in the Severn River District; but they are at Oxford House and Nelson River, They may inhabit 
other localities to the northeast of Lake Winnipeg.”—( IS. Notes in the Smithsonian Institution.) 
Mr. B. R. Ross gives its range as extending to Fort Good Hope, but as being “rare at Fort Simp- 
son and north of Liard’s River. At Forts Resolution and Liard, these animals are very destructive to 
such garden prodace as is raised there.”—(J£S. Noles in Smithsonian Institution.) 
tAmer. Nat. vol. ii, p. 530. 
} Proc. Bost. Soc. Nat. Hist. xvii, 1874, 43. 
