194 Frerp Museum or NaturaL History — Zodéxoey, Vot. XI. 
Description — General color of upper parts brown, somewhat variable 
in shade (usually from dull cinnamon to isabella color); middle 
of back darker brown than sides; ears brown with a faint whitish 
edging when closely examined, occasionally a few whitish hairs 
at anterior bases of ears, but often absent; a blackish spot at the 
base of the whiskers; hairs on under parts of body white at tips, 
the bases plumbeous gray; the general color of under parts white 
or grayish white according to the condition of the pelage; feet 
white; upper surface of tail brown with narrow white edge, under 
surface white; tip of tail pencillate. 
Measurements — Total length, 6.87 to 7.50 in. (175 to 190 mm.); tail 
vertebree, 3.75 to 4 in. (80 to 100 mm.); hind foot, .80 to .87 in. 
(z0 to 22 mm.). 
The Canadian White-footed Mouse occurs within our limits in 
the Pine regions of northern Wisconsin, where it is common in deep 
woods. It may be looked for near water courses, among rocks, and 
about old logs. A favorite resort of this mouse is in and about old 
log cabins. So far as known, its habits differ but little from other 
Wood Mice belonging to the genus. In Wisconsin it not uncommonly 
makes its nest in a hollow log or stump, or in openings between the 
logs of old cabins. In such places the nest is in the middle of a rounded 
mass of grass often mixed with leaves and small pieces of bark. 
Ernest Thompson Seton in writing of the habits of the closely allied 
northern form, P. m. arcticus, which undoubtedly differ little if any 
from that of gracilis, says,* ‘When the nest is disturbed so that the 
mother runs out, she commonly carries off some or even all of her 
brood attached to her teats. This, however, is not her regular mode 
of carrying them about, but is rather due to the fact that the young 
when very small attached themselves firmly to the teat, almost in mar- 
supial style, and the mother has not time to disengage herself if sud- 
denly driven forth. Most of the Deermice carry their young in the 
mouth, one at a time, when they move them, just as a cat does her 
kittens.” 
Specimens examined from Wisconsin and adjoining states: 
Wisconsin — Solon Springs, 4; Spread Eagle, 4; Lac Vieux Desert, 
Vilas Co., 11; (M. P. M.) Upper St. Croix Lake, Douglas Co., 7; 
St. Croix Dam, 6; Eagle River, 2; Mercer, 1; Namekagan River, 
Burnett Co., 9; Marinette Co., 2; Cataline, 2; Divide, Vilas Co., 
4= 52. 
Michigan — Park Siding, 4. 
* Life Histories of Northern Animals, I, 1909, p. 496. 
