Fres., 1912. MammMats or ILLINOIS AND WISCONSIN — Cory. 157 
Marmota monax canadensis (Erx.). 
CANADA WOODCHUCK. 
[Glis] canadensis ERXLEBEN, Syst. Regni Anim., I, 1777, p. 363. 
Arctomys monax canadensis ALLEN, Bull. Amer. Mus. Nat. Hist., XI, 1898, p. 456. 
Type locality — Hudson Bay. 
Distribution — Ranging from northern Wisconsin and northern New 
England, northward to Hudson Bay and west in Canada to about 
longitude 120° and latitude 60°. Intergrades in northern Wiscon- 
sin with monax. 
Description — (Specimen from Murray Bay, Province of Quebec, 
Canada.) General appearance of M. monax, but smaller and colora- 
tion of under parts decidedly more rusty brown; whole crown 
brownish black, brownish black of crown including the eye and 
extending considerably below it; rest of upper parts grizzly, the hairs 
being broadly tipped with gray. The tawny under fur on the back 
usually has a very slight rufous brown tinge, under parts rusty brown 
or red brown; muzzle pale; feet black; tail brownish black mixed 
with brown hairs. 
Measurements — Total length, about 20.25 in. (515 mm.); tail vertebre, 
about 4.25 in. (108 mm.); hind foot, 3 in. (74 mm.). 
Remarks — Woodchucks from extreme northern Wisconsin, while not 
typical canadensis, approach much nearer to that form than to 
monax. A specimen taken by Mr. W. H. Osgood at Conover, 
Vilas Co., Wisconsin, August 11, 1910, has the whole crown brownish 
black and the rusty coloration of the under parts closely approach- 
ing canadensis. Its measurements are as follows: (No. 18392, oS) 
Total length, 526 mm.; tail vertebrae, 137 mm.; hind foot, 69 mm. 
An adult male, killed at Minagua, Vilas Co., measured: Total 
length, 520 mm.; tail vertebra, 125 mm.; hind foot, 7o mm. 
Specimens examined: 
Wisconsin — Conover, Vilas Co., 1; (O. C.) Mercer, Iron Co. (skull), 1; 
Langlade Co., (skulls), 2; (O.) Minagua, Vilas Co., 1=5. 
Minnesota — Aitken, (melanistic), 1. 
Canada — Murray Bay, Province of Quebec, 4. 
