606 U. S. NATIONAL MUSEUM BULLETIN 205 



Alaska (Heller, Univ. California Publ. Zool., vol. 5, No. 2, p. 257, Feb. 18, 

 1909) . 



Microtus oeconomus gilmorei Setzerf* 



1952. Microtus oeconomus gilmorei Setzer, Proc. Biol. Soc. Washington, vol. 

 65, p. 75, Apr. 25, 1952. 



Type Locality.— Point Lay, lat. 69°46' N., long. 163°04' W., Alaska. Range.— 

 Arctic slope of Alaska from Point Lay on west at least to Umiat on east and 

 from Meade River on north at least to crest of Brooks Range on south. 



Microtus oeconomus macfarlani Merriamf * 



1900. Microtus macfarlani Merriam, Proc. Washington Acad. Sci., vol. 2, 



p. 24, Mar. 14, 1900. 

 1909. Microtus operarius endoecus Osgoodf , North Amer. Fauna No. 30, p. 23, 

 Oct. 7, 1909. (Mouth of Charlie Creek, Yukon River, about 50 miles above 

 Circle, Alaska. Regarded as identical with macfarlani by Anderson, Nat. 

 Mus. Canada Bull. 102 (1946), p. 157, Jan. 24, 1947). 

 1942. M[icrotus] oec[onomus] macfarlani Zimmermann, Arch. Naturg., n. F., 



vol. 11, No. 2, p. 187, Sept. 10, 1942. 

 1950. M[icrotus] r[atticeps] macfarlani Ognev, The mammals of Russia 

 ( U.S.S.R.) and Adjacent Countries, Publ. Acad. Sci. U.S.S.R., vol. 7, p. 258. 

 Type Locality. — Fort Anderson, Anderson River, Mackenzie District, North- 

 west Territories, Canada. Range. — From inland tundra areas of Yukon River 

 Valley in eastern Alaska through central and northern Yukon (Canol Road at 

 higher altitudes, Rose River and Macmillan Pass area in both Yukon and North- 

 west Territories) ; Lapierre House, Old Crow River, Firth River; to northern 

 part of Mackenzie delta (Aklavik, Tuktuyaktok, Toker Point) ; Anderson River, 

 Franklin Bay, Langton Bay, and south side of Coronation Gulf (Anderson, Nat. 

 Mus. Canada Bull. 102 (1946) , p. 157, Jan. 24, 1947) . 



Subgenus STENOCRANIUS Kastchenko 



1901. Stenocranius Kastchenko, Annuaire Mus. Zool. Acad. Sci., St. Peters- 

 bourg, vol. 6, p. 167. (Type, Microtus slowzowi Poljakoff.) 



abbreviatus — group ** 

 Microtus abbreviatus abbreviatus Millerf * 



1899. Microtus abbreviatus Miller, Proc. Biol. Soc. Washington, vol. 13, p. 13, 

 Jan. 31, 1899. 



Type Locality. — Hall Island, Bering Sea, Alaska. Range.- — Known from Hall 

 Island only. 



Microtus abbreviatus fisheri Merriamf* 



1900. Microtus abbreviatus fisheri Merriam, Proc. Washington Acad. Sci., 

 vol. 2, p. 23, Mar. 14, 1900. 



Type Locality. — St. Matthew Island, Bering Sea, Alaska. Range. — Known 

 from St. Matthew Island only. 



** For inclusion of the abbreviatus group in the subgenus Stenocranius, see Nelson, Journ. 

 Maram., vol. 12, No. 3, p. 311, Aug. 24, 1931 ; and R. M. Gilmore, Abstracts of theses . . . , 

 1942, Cornell Univ., p. 289, 1943. 



