FEB., 1912. MAMMALS OF ILLINOIS AND WISCONSIN CORY. 145 



Indiana. Includes within its range the whole of Iowa, northern 

 Missouri, northern two-thirds of Illinois, a small portion of north- 

 western Indiana, southern and western Wisconsin and at least the 

 southern and western half of Minnesota. An isolated colony occurs 

 in the vicinity of Tuckerton, New Jersey, which has descended from 

 a pair introduced there in 1867.* It has also been introduced 

 near Georgian Bay, Ontario. f 



Description Adult: Upper parts (except head and tail) grayish 

 brown or pale tawny brown, the hairs vermiculated with blackish; 

 a buffy white ring around the eye; top and sides of head blackish, 

 faintly speckled with white ; under parts buffy white or tawny white ; 

 terminal two-thirds of tail grayish, the hairs banded with black and 

 tipped with white. 



Immature: The tawny tinge much less pronounced and the 

 back with irregular bars of black. 

 Measurements Total length, 15 in. (380 mm.); tail vertebrae, 4.75 



in. (120.6 mm.); hind foot, 1.88 in. (47.6 mm.). 



Remarks This species has a superficial resemblance to a Gray Squirrel 

 and might be mistaken for one by those not familiar with mammals. 

 The tail, however, is much shorter and less bushy (tail always less 

 than 6> inches), the body color is more tinged with tawny, and 

 the ears are much shorter. 



Franklin's Prairie Squirrel, Franklin's Spermophile or "Gray 

 Gopher", as it is variously called, occurs in various localities through- 

 out southern and western Wisconsin and at least the northern two- 

 thirds of Illinois, although more local in distribution and less common 

 than the preceding species. Jackson considers them quite common 

 in Wisconsin west from Rock County to the Mississippi River and 

 north to Pepin County. He states he has taken specimens in Rock 

 County and has observed the species in Green, Sauk and Jefferson 

 counties (/. c., p. 18). Hollister gives it as common in isolated colonies 

 in various parts of Wai worth County and says, "I have collected many 

 specimens near Delavan. The largest colonies here are located on 

 Ridge Prairie just west of the town, and on the border of Big Marsh, 

 seven miles north of Delavan on the Whitewater road. The Biological 

 Survey has records of this species from Janesville, Kansasville, Madison, 

 Plover, Racine, Ripon and Whitewater" (/. c.,p. 139). It is apparently 

 not uncommon in Dodge County, as Mr. W. E. Snyder has collected 

 a number of specimens near Beaver Dam. In Illinois it is found in 

 scattered communities throughout the greater portion of the central 



* Allen, Monog. N. Amer. Rodentia, 1877, p. 833. 



t Seton, Life Histories of Northern Animals, I, 1909, p. 374. 



