FEB., 1912. MAMMALS OF ILLINOIS AND WISCONSIN CORY. 193 



in search of seeds, and collecting them in autumn instead of roots, when 

 it travels as often by springing over the grass as by running through it. 

 This mouse probably feeds more or less upon insects, as it is carnivorous 

 in captivity; though some specimens are much less so than others. On 

 one occasion, I captured a pair with five young, and placed them all 

 in a cage well supplied with various kinds of vegetables and grain. 

 The next day, several of the young were killed and eaten, and in two 

 or three days, they had all disappeared. Shortly afterwards, the 

 male, which had been slightly injured, was found dead, and partly 

 devoured by his rapacious spouse. After this, I fed my specimens with 

 meat, as well as grain, which they ate; and, as long as they were sup- 

 plied with it, they lived together harmless; but no sooner was this 

 withheld, than the old ones, both male and female, devoured their 

 young." (/. c., pp. 93-94.) 



Specimens examined from Illinois, Wisconsin and adjoining states: 



Illinois Olive Branch, 6; Fox Lake, 17; Reevesville, 3 = 26. 



Wisconsin 1 Beaver Dam, 35; Milton, i; Delavan, i; (M. P. M.) 

 Jefferson Co., 2; Prescott, Pierce Co., 38; Maiden Rock, i; Dela- 

 van, 3; Newport, Door Co., 3 (not typical); Kelly Brook, Oconto 

 Co., i ; Prairie du Sac, Sauk Co., 41 ; Wyalusing, Grant Co., 2 = 128. 



Indiana La Porte, 2; Denver, 2 = 4. 



Minnesota Ft. Snelling, 2; Steel County, 4 = 6 



Peromyscus maniculatus gracilis (LECONTE). 

 CANADIAN WHITE-FOOTED MOUSE. CANADIAN DEER MOUSE. 



Hesperomys gracilis LECONTE, Proc. Acad. Nat. Sci. Phila., VII, 1855, p. 442. 



Peromyscus canadensis ADAMS, Rept. State Board Geol. Surv. Mich., 1905 (1906), 

 p. 129 (Michigan). JACKSON, Bull. Wis. Nat. Hist. Soc., VI, 1908, p. 20 (Wis- 

 consin). 



Peromyscus maniculatus gracilis OSGOOD, N. Amer. Fauna, No. 28, 1909, p. 42 

 (Michigan, Minnesota, Wisconsin, etc.). 



Type locality Michigan. 



Distribution "Northeastern United States and. southern Canada, 

 from northern Minnesota east through northern Wisconsin, Michi- 

 gan, Ontario, Quebec, New York and western New England. Can- 

 adian Zone" (Osgood). 



Special characters Somewhat similar to P. m. bairdi, but total length 

 greater and tail decidedly longer; more likely to be confounded 

 with P. I. noveboracensis, which it often closely resembles. (For 

 distinguishing characters, as compared with that species, see foot- 

 note page 174.) 



