RODENTIA: CRICETIDAE 587 



Type Locality .— Kidluit Bay, northeast corner of Richards Island, lat. 69°31' 

 N., long. 133°49' W., Mackenzie District, Northwest Territories, Canada. 

 Range. — Known from type locality only. 



Microtus pennsylvanicus alcorni Baker* 



1951. Microtus pennsylvanicus alcorni Baker, Univ. Kansas Publ. Mus. Nat. 

 Hist., vol. 5, No. 9, p. 105, Nov. 28, 1951. 



Type Locality. — Six miles southwest of Kluane, Yukon Territory, Canada. 

 Altitude, 2,550 feet. Range. — Extreme southwestern Yukon Territory and adja- 

 cent parts of Alaska as far south as Haines, as far north as Northway, and as 

 far west along Alaskan coast as Anchorage and Tyonek. 



Microtus pennsylvanicus tananaensis Baker* 



1951. Microtus pennsylvanicus tananaensis Baker, Univ. Kansas Publ. Mus. 

 Nat. Hist., vol. 5, No. 9, p. 107, Nov. 28, 1951. 



Type Locality.— Yerrick Creek, 21 miles west and 4 miles north of Tok Junc- 

 tion, Alaska. Range. — -East-central Alaska as far south as Tok Junction, as far 

 west as Mount McKinley and Nulato (V. Bailey, North Amer. Fauna No. 17, 

 p. 24, June 6, 1900) , as far north as Fairbanks, and as far east as Eagle . 



Microtus pennsylvanicus admiraltiae Heller* 



1909. Microtus admiraltiae Heller, Univ. California Publ. Zool., vol. 5, No. 2, 



p. 256, Feb. 18, 1909. 

 1933. Microtus pennsylvanicus admiraltiae Swarth, Proc. Biol. Soc. Washing- 

 ton, vol. 46, p. 208, Oct. 26, 1933. 

 Type Locality. — Windfall Harbor, Admiralty Island, Alaska. Range. — 

 Known from Admiralty Island only. 



Microtus pennsylvanicus modestus (Baird) f* 



1858. Arvicola modesta Baird, in Mammals, Rep. Expl. Surv. Railr. to Pacific, 



vol. 8, pt. 1 (Washington, 1857) , p. 535, July 14, 1858. 

 1894. Arvicola (Mynomes) microcephalus Rhoads, Proc. Acad. Nat. Sci. 

 Philadelphia, vol. 46, p. 286, Oct. 23, 1894. (Lac La Hache, British Co- 

 lumbia, Canada. Regarded as valid by F. H. Dale, Journ. Mamm., vol. 21, 

 No. 3, p. 337, Aug. 13, 1940.) 

 1900. Microtus pennsylvanicus modestus V. Bailey, North Amer. Fauna No. 



17, p. 20, June 6, 1900. 

 Type Locality. — Cochetopa ("Sawatch") Pass, Saguache County, Colo. 

 Range. — Rocky Mountains and adjacent ranges from San Rafael near eastern 

 point of Zuni Mountains and Sangre de Cristo Mountains in northern New Mexico 

 (V. Bailey, North Amer. Fauna No. 53 (December 1931) , p. 200, Mar. 1, 1932) , 

 Colorado (Warren, The mammals of Colorado, . . . , p. 226, 1942), Wyoming, 

 and Montana; to interior, wet belt of southwestern British Columbia, including 

 Cariboo, Monashee, and Selkirk Mountains and that part of interior plateau 

 east of Fraser River and north of Kamloops Lake (F. H. Dale, Journ. Mamm., 

 vol. 21, No. 3, p. 337, Aug. 13, 1940) ; and westward to near Pocatello, Bannock 

 County and Coeur d'Alene, Kootenai County, Idaho (Davis, The Recent mam- 

 mals of Idaho, p. 315, Apr. 5, 1939) ; and south to valleys of central northern 

 Utah ( Durrant, Univ. Kansas Publ. Mus. Nat. Hist., vol. 6, p. 363, Aug. 10, 1952) . 



