MEADOW MOUSE 



St. Matthew Island Meadow Mouse. — Microtus ahhreviatus 

 fisheri Merriam. 

 Slightly larger and darker than typical ahhreviatus. Upper- 

 parts (summer) dark rich buff, sprinkled with black dor- 

 sally; feet buffy; tail with faint dusky line above, sides and 

 under surface buff; underparts strongly buffy. Total 

 length, 6.6 inches; tail vertebras, i.i inches; hind foot, .90 

 inch. Found only on St. Matthew Island, Bering Sea, 

 Alaska. 



Alaska Mountain Vole. — Microtus miurus miurus Osgood. 

 Resembling ahhreviatus of which it is a miniature. Upper- 

 parts uniform pale tawny to pale buffy gray, more or less 

 mixed with black; underparts washed with buffy; tail 

 above, dusky, below, buffy. Total length, 6 inches; tail 

 vertebrae, 1.2 inches; hind foot, .8 inch. Pound above 

 timber line in the mountains near Hope City, Tumagain 

 Arm, Cook Inlet, Alaska. 



Toklat River Vole. — Microtus miurus oreas Osgood. 



"Similar to M. miurus but tone of color more ochraceous 

 (not so yellowish) throughout; tail slightly shorter and 

 chiefly ochraceous, slightly or not at all darker above than 

 below." (Osgood) Found about the head of Toklat 

 River, Alaskan Range, Alaska. 



Townsendii Group 



Townsend Meadow Mouse. — Microtus townsendii (Bachman). 

 Very large in size; ears conspicuous; adult males with well- 

 developed hip glands. Upperparts (summer) Vandyke 

 brown, plentifully sprinkled with black; sides dark buffy 

 gray; tail almost monocolor, blackish above, slightly 

 lighter below; feet dark gray; underparts grayish to dusky. 

 Winter pelage lighter above (grayer) and below. Total 

 length, 8 inches; tail vertebras, 2.6 inches; hind foot, 1.02 

 inches. Found in low country west of the Cascades, from 

 the Puget Sound region south along the coast as far as 

 Eureka, California, up the valleys of the Willamette and 

 Rogue Rivers. 



Vancouver Meadow Mouse. — Microtus tetramerus (Rhoads). 

 , Resembling toivnsendii but slightly smaller. Pelage practi- 

 ically identical to that of townsendii. Total length, 7.2 

 inches; tail vertebrae, 2.2 inches; hind foot, .9 inch. 

 Found on the southern end of Vancouver Island, British 

 Columbia. 



Longicaudus Group 



Long-tailed Meadow Mouse. — Microtus longicaudus (Mer- 

 riam). 

 Resembling pennsylvanicus in body size but tail longer, 

 ears larger, and color grayer. Upperparts (summer) 



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