MAMMALS 



307 



beneath; feet brownish; length 180 mm.; tail 50 mm.; hind foot 21 mm.; 

 nammcT 8: eastern and central States; southward to North Carolina; 

 westward to the Rockies; northward to Hudson Bay; common in 

 meadows. 



Subspecies of M. pennsylvanicus 



M. p. pennsylvanicus (Ord). Transition zone from the Atlantic 

 coast to the Great Plains. 



M. p. nigrans Rhoads. Larger, with notably 

 larger hind feet and darker coloration: coast region 

 of northern North Carolina and southern Virginia. 



M. p. fontigenus (Bangs). Size smaller: eastern 

 Canada. Hudsonian zone. 



M. p. acadicus Bangs. Smaller and paler: Nova 

 Scotia and Prince Edwards Island. 



M. p. modestus (Baird). Color paler, more 

 yellowish: Rocky IMountains and western plains from 

 New Mexico to British Columbia; Transition zone. 



M. breweri (Baird). Color pale grayish; fur long 

 and coarse; length 182 mm.; tail 54 mm.; hind foot 22 

 mm.: Muskeget Island, Massachusetts. 



M. ochrogaster (Wagner). Prairie meadow mouse. 

 Color grizzly gray; belly fulvous; fur coarse; length 

 150 mm.; tail ;i^2 mm.; hind foot 20 mm.; mammce 6: 

 southern Wisconsin to Oklahoma and eastern Kansas 

 and Nebraska; eastward to Indiana; common in dry 

 prairie land. 



M. chrotorrhinus (Miller). Color glossv brown; 



^ . . ' Fig. 110.— Micro- 



nose, ears and rump conspicuously yellowish; length tus pennsylvanicus 

 165 mm.; tail 45 mm.; hind foot 19 mm.: Mount i'^f^^r stone i^ Cram). 

 Washington, the Catskills and into Canada; Hudsonian zone. 



-1/. haydeni (Baird). Color light gray; belly silvery white; length 

 180 mm.; tail 47 mm.; hind foot 22 mm.: western South Dakota to 

 Kansas; westward into southern Montana, Wyoming and eastern 

 Colorado; in dry prairies. 



M. longicaudus (Merriam). Color dark brown above, whitish 

 below; length 180 mm.; tail 65 mm.; hind foot 21 mm.: Boreal cap of 

 Black Hills. 



M. ludovicianus Bailey. Color dark gray above, dark buff below: 

 length 164 mm.; tail t^^, mm.; hind foot 19 mm.: coast prairies of 

 Louisiana. 



