Fes., 1912. MAMMALS OF ILLINOIS AND WISCONSIN — Cory. 185 
Measurements — Total length, about 7 in. (178 mm.); tail vertebre, 
3 in. (76 mm.); hind foot, .85 in. (21 mm.). 
This species occurs in southern Illinois. Its habits are similar to 
those of the Northern White-footed Mouse, Peromyscus leucopus 
noveboracensis. 
Specimens examined from Illinois: 
Illinois — Reevesville, Johnson Co., 14; Ozark, Johnson Co., 18; 
Golconda, Pope Co., 8; Olive Branch, Alexander Co., 8=48. 
Peromyscus leucopus noveboracensis (FiscHeEr). 
NoRTHERN WHITE-FOOTED Mouse. 
NoRTHERN WHITE-FOOTED Woop Movusre. Woopitanp DEER Movse. 
[Mus sylvaticus] Noveboracensis FiscHer, Synopsis Mamm., 1829, p. 318. 
Mus leucopus Lapuaw, Trans. Wis. State Agr. Soc., II, 1852 (1853), p. 340 (Wiscon- 
sin). Kennicort, Agr. Rept. for 1856, U. S. Patent Office Rept., 1857, Pp. 90 
(Illinois). SNypDER, Bull. Wis. Nat. Hist. Soc., II, 1902, p. 117. 
Vesperimus leucopus Herrick, Geol. & Nat. Hist. Surv. Minn., Bull. No. 7, 1892, 
p. 178 (Minnesota). 
Hesperomys leucopus ALLEN, Proc. Bost. Soc. Nat. Hist., XIII, 1869 (1871), p. 192 
(Iowa). 
Peromyscus leucopus noveboracensis JACKSON, Bull. Wis. Nat. Hist. Soc., VI, 1908, 
p. 21 (Wisconsin). Haun, Ann, Rept. Dept. Geol. & Nat. Resources Ind., 
1908 (1909), p. 497 (Indiana). Oscoop, N. A. Fauna, No. 28, 1909, p. 117 
(Illinois, Indiana, Iowa, Kentucky, Michigan, Minnesota, Missouri, Wisconsin, 
etc.). Woop, Bull. Ill. State Lab. Nat. Hist., VIII, 1910, p. 539 (Illinois). 
Type locality — New York. 
Distribution — Northern United States, Nova Scotia and a small 
portion of southern Ontario, west to Minnesota, south to Missouri, 
south-central Illinois and Indiana (where it intergrades with P. 
leucopus), eastern Tennessee and Virginia. (See map.) 
Description — Similar to P. leucopus but averaging slightly larger and 
somewhat paler; fur somewhat longer and softer. 
Measurements — Total length, about 7 in. (178 mm.); tail vertebre, 
about 3 in. (76 mm.); hind foot, .87 (22 mm.). 
The Northern White-footed Mouse is normally an inhabitant of the 
woods, although in summer it is often found in pastures where there are 
bushes and stumps. Old corn shocks are favorite resorts of these 
Mice, but they are not commonly found at any great distance from 
timber-land of some sort; although Snyder states that he has “taken 
them in traps in grassy fields a mile from any timber”’ (J. ¢., p. 117). 
It builds its nest under logs or in an old hollow log or pile of brush, 
and again in bushes. I have found several of the latter, none of which 
