FIELD BOOK OF MAMMALS 



Found on "Eastern coast of Labrador from Hamilton 

 Inlet to Ungava Bay, in Hudsonian Zone." (Bailey) 



Newfoundland Meadow Mouse. — Microtus terrcenovcB (Bangs). 

 Somewhat larger than typical pennsylvanicus and yellower. 

 Upperparts (summer) dark russet sprinkled with brownish, 

 paler on sides and face; patch on nose dark buffy to dull 

 russet; feet grayish brown; tail bicolor, blackish and 

 soiled whitish; underparts ashy with median longitudinal 

 streak of dusky cinnamon. Winter pelage paler above 

 and below, with more contrast. Total length, 7.3 inches; 

 tail vertebrae, 2.1 inches; hind foot, .94 inch. Found 

 in Newfoundland and Penguin Island. 



Beach Meadow Mouse. — Microtus hreweri (Baird). 



Larger and paler than typical pennsylvanicus; pelage long 

 and coarse; upperparts (summer) buffy gray sparingly 

 sprinkled with brown and black; sides paler; feet silvery 

 gray; tail bicolor, rusty brown to blackish and soiled 

 whitish. Total length, 7.3 inches; tail vertebras, 2.2 inches; 

 hind foot, .9 inch. Found only on Muskeget Island, 

 Massachusetts, 



Gull Island Meadow Mouse. — Microtus nesophilus Bailey. 

 Resembling pennsylvanicus in size but darker. Upper- 

 parts (summer) mixed dark yellowish bister and black; 

 nose and face dark; feet blackish; tail above, blackish, 

 below, dark brown; underparts dusky, tinged with cinna- 

 mon. Total length, 7.4 inches; tail vertebras, 1.6 inches; 

 hind foot, .84 inch. Found only on Great Gull Island, at 

 entrance to Long Island Sound, New York, and probably 

 now extinct. 



Montanus^ Group 



Peale Meadow Mouse. — Microtus montanus montanus (Peale) 

 Size about that of typical pennsylvanicus; color dark; hip 

 glands of male conspicuous; ears very hairy. Upperparts 

 mixed bister or ashy and blackish; feet slate- colored; lips 

 usually touched with white; tail faintly bicolor, blackish 

 and slate-colored; underparts ashy. Total length, 7 inches; 

 tail vertebras, 2.1 inches; hind foot, .86 inch. Found in 

 "Northeastern California, eastern Oregon, northern Utah 

 and Nevada, in the Upper Sonoran and Transition Zones." 

 (Bailey) 



Yosemite Meadow Mouse. — Microtus montanus yosemite 



Grinnell. 



Resembling typical montanus in size but lighter colored. 



Upperparts buff to light buckthorn-brown mixed with 



blackish ; sides much lighter ; feet gray ; tail bicolor, brown or 



^ For a recent revision of such of the forms of this group as occur 

 in California see Remington Kellogg, Univ. of California Publ. in Zo- 

 ology, Vol. 21, No. 7, pp. 245-274, 1922. 



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