MEADOW MOUSE 



Olympic Meadow Mouse. — Microtus mordax macrurus (Mer- 



riam). 

 Resembling typical mordax but larger and darker. Upper- 

 parts (summer) dark bister, heavily spiinkled with black; 

 sides paler; feet dark gray; tail bicolor, blackish or brown- 

 ish and soiled whitish; usually tipped with white; under- 

 parts dull buffy to whitish. Total length, S.2 inches; 

 tail vertebrae, 3.2 inches; hind foot, .96 inch. Found in 

 Olympic Mountains, and Mt. Rainier, Washington, and 

 along the coast strip of British Columbia and Alaska north 

 to Yakutat; possibly as far south as the Columbia River. 



Coronation Island Meadow Mouse. — Microtus coronarius 

 Swarth. 

 Much like macrurus in coloration but much larger. Upper- 

 parts dark Vandyke brown mixed with black; sides of 

 head much paler; feet grayish white; tail bicolor, above 

 brownish black, below whitish. Total length, 8.6 inches; 

 tail vertebrae, 3.4 inches; hind foot, i inch. Found on 

 Coronation and Warren Islands, Alaska. 



Coast Meadow Mouse. — Microtus angusticeps Bailey. 



"Smaller and darker colored than typical mordax." 

 (Bailey) Upperparts (summer) dark bister, sprinkled with 

 black; face and nose darker, sides paler; feet dark gray; 

 tail bicolor, blackish and soiled whitish; underparts creamy 

 white. Total length, 6.8 inches; tail vertebras, 2.2 inches; 

 hind foot, .88 inch. Found in the "Coast region of north- 

 western California and southwestern Oregon." (Bailey) 



Mountain Meadow Mouse. — Microtus alticola aUicola (Mer- 

 riam). 

 Resembling longicaudus but with shorter tail and smaller 

 hind foot and ear. Upperparts (summer) sepia to dull 

 bister, with sprinkling of black; sides a little paler; feet 

 grayish; tail faintly bicolor, blackish to grayish; under- 

 parts pale buffy to whitish. Total length, 7 inches; tail 

 vertebrae, 2.2 inches; hind foot, .8 inch. Found in "Boreal 

 Zone of San Francisco Mountain (Arizona), from 8,200 

 feet altitude up to timberline at 11,000 feet." (Bailey) 



Graham Mountain Meadow Mouse. — Microtus alticola leuco- 

 phceus (Allen). 

 Resembling typical alticola but slightly larger. Upper- 

 parts and underparts as in typical alticola. Total length, 

 7 inches; tail vertebr£e, 2 inches; hind foot .9 inch. Found 

 only in the Graham Mountains, Graham County, Arizona. 



Mexicanus Group 



Guadalupe Meadow Mouse. — Microtus mexicanus guadalu- 

 pensis Bailey. 

 A small to medium-sized Mouse with short tail. "Upper- 

 parts dull umber brown; belly buffy gray; feet and tail 

 brownish gray." (Bailey) Total length, 6 inches; tail 



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