RODENTIA: CRICETIDAE 561 



land) to western border of Mackenzie River Delta in extreme northwest corner of 

 Mackenzie District (Anderson, Nat. Mus. Canada, Bull. 102 (1946), p. 149, 

 Jan. 24, 1947). Recorded also from Muller Bay (Port Moller) on west coast of 

 Alaska Peninsula (G. M. Allen, Bull. Mus. Comp. Zool., vol. 62, No. 13, p. 524, 

 February 1919). 

 Dicrostonyx groenlandicus unalascensis Merriamf* 



1900. Dicrostonyx unalascensis Merriam, Proc. Washington Acad. Sci., vol. 2, 

 p. 25, Mar. 14, 1900. 



1919. Dicrostonyx rubricates unalascensis G. M. Allen, Bull. Mus. Comp. 

 Zool., vol. 62, p. 530, February 1919. 



Type Locality. — Unalaska, Unalaska Island, Alaska. Range. — Confined, so 

 far as known, to Unalaska Island. 



Dicrostonyx groenlandicus stevensoni Nelsonf * 



1929. Dicrostonyx unalascensis stevensoni Nelson, Proc. Biol. Soc. Washing- 

 ton, vol. 42, p. 145, Mar. 30, 1929. 

 1941. Dicrostonyx rubricatus stevensoni Ellerman, The families and genera 



of living rodents, vol. 2, p. 558, Mar. 21, 1941. 

 Type Locality. — Umnak Island, about 6 miles from western end of Unalaska 

 Island, Alaska. Range. — Umnak Island. 



Dicrostonyx exsul G. M. Allen* 



1919. Dicrostonyx exsul G. M. Allen, Bull. Mus. Comp. Zool., vol. 62, p. 532, 



February 1919. 

 Type Locality. — St. Lawrence Island, Bering Sea, Alaska. Range. — St. Law- 

 rence Island. 



Genus SYNAPTOMYS s0 Baird (bog-lemmings) 



1858. Synaptomys Baird, Mammals, in Rep. Expl. Surv. Railr. to Pacific, vol. 8, 

 pt. 1 (Washington, 1857), p. 558, July 14, 1858. (Type, Synaptomys 

 cooperi Baird.) 



Subgenus SYNAPTOMYS Baird 



Synaptomys cooperi cooperi Bairdf* 



1858. Synaptomys cooperi Baird, Mammals, in Rep. Expl. Surv. Railr. to 

 Pacific, vol. 8, pt. 1 (Washington, 1857), p. 558, July 14, 1858. 



1884. Synaptomys cooperi True, Proc. U. S. Nat. Mus., vol. 7 (App., Circ. 29) , 

 p. 596, Nov. 29, 1884. (Part.) 



1896. Synaptomys fatuus Bangs, Proc. Biol. Soc. Washington, vol. 10, p. 47, 

 Mar. 9, 1896. (Lake Edward, Quebec, Canada.) 



Type Locality. — Unknown, probably somewhere in northern or western portion 

 of New England States or western part of New York (A. B. Howell, North Amer. 

 Fauna No. 50 (June 30), p. 13, Aug. 5, 1927). Restricted to Jackson, Carroll 

 County, N. H., by Bole and Moulthrop (Sci. Publ. Cleveland Mus. Nat. Hist., 

 vol. 5, No. 6, p. 146, Sept. 11, 1942). Range. — Canadian and upper part of 

 Transition Zone in northern United States from Minnesota to New England, 

 south to central Wisconsin, southern Michigan, south-central Ohio (Bole 

 and Moulthrop, loc. cit.), and in Catskill Mountains to southern New York; 

 and to Nordmont, Sullivan County, Pa. (Green, A contribution to the mammalogy 



8n Revised by A. B. Howell, North Amer. Fauna No. 50 (June 30) , pp. 1-38, Aug. 5, 1927. 



