Fes., 1912. Mammats oF ILLINOIS AND WISCONSIN — Cory. 251 
that long member, for its whole length, through the mouth from side 
to side, beginning near the body and ending at the tip. At night as 
. soon as the lights were put out the mouse began gnawing the paper, 
and during the night it gnawed all the newspapers it could reach, and 
made the fragments and the cotton into a large nest perhaps five or 
six inches in diameter, and established itself in the centre. Here it 
spent the succeeding day. The next night it was supplied with more 
, NE Area of lotereradations 
Map illustrating approximate distribution of the Jumping Mice belonging to the genus Zapus 
in eastern United States. 
Zapus hudsonius (ZIMMERMANN). ‘Type locality — Hudson Bay. Description as. 
previously given. 
Zapus h. campestris PREBLE. (N. Amer. Fauna, No. 15, 1899, p. 20.) Type lo- 
cality — Bear Lodge Mountains, Wyoming. Similar to hudsonius but slightly 
larger, brighter in color and brain-case higher. , 
Zapus h. americanus (BARTON). (Trans. Amer. Philos. Soc., IV, 1799, p. 115.) 
Type locality — Near Philadelphia, Penn. Smaller than hudsonius, with color 
of dorsal area less distinctly marked. 
Zapus h.ladas BANGs. (Proc. N. Eng. Zodl. Club, I, 1899, p. 10.) Type locality — 
Rigoulette, Hamilton Inlet, Labrador. Larger and darker than hudsonius, 
with longer tail and hind foot. 
