560 U. S. NATIONAL MUSEUM BULLETIN 205 



Keewatin District, intergrading with richardsoni in southern part of area (Ander- 

 son, Nat. Mus. Canada, Bull. 102 (1946) , p. 148, Jan. 24, 1947) . 



Dicrostonyx groenlandicus richardsoni Merriamf * 



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



p. 26, Mar. 14, 1900. 

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



Zool., vol. 62, p. 525, February 1919. 

 1935. Dicrostonyx groenlandicus richardsoni Degerb0l, in Degerb0l and 

 Freuchen, Mammals, in Rep. Fifth Thule Exped. 1921-24, Danish Exped. to 

 Arctic North America, vol. 2, Nos. 4-5, pt. 1, pp. 9-16. 

 Type Locality. — Fort Churchill, west shore of Hudson Bay, Manitoba, Canada. 

 Range. — Barren Grounds west of Hudson Bay from Churchill, northeastern 

 Manitoba, at least as far north as Tavani Bay; west to Artillery Lake, intergrading 

 with groenlandicus northwest of Hudson Bay and with kilangmiutak farther west 

 (Anderson, Nat. Mus. Canada, Bull. 102 (1946), p. 148, Jan. 24, 1947). 



Dicrostonyx groenlandicus kilangmiutak Anderson and Rand* 



1945. Dicrostonyx groenlandicus kilangmiutak Anderson and Rand, Journ. 



Mamm., vol. 26, No. 3, p. 305, Nov. 14, 1945. 

 Type Locality. — DeHaven Point, southeastern point of Victoria Land, west 

 side of Victoria Strait, District of Franklin, Northwest Territories, Canada; 

 lat. about 69° N., long, about 101°30' W. Range. — Arctic coast mainland at 

 least from mouth of Mackenzie River to Coronation Gulf, and south to Aylmer 

 Lake, in District of Mackenzie; and Banks, Borden, Melville, Taylor, and Victoria 

 Islands in District of Franklin, Northwest Territories (Anderson, Nat. Mus. 

 Canada, Bull. 102 (1946) , p. 148, Jan. 24, 1947) . 



Dicrostonyx groenlandicus rubricatus (Richardson)* 



1839. Arvicola rubricatus Richardson, The zoology of Captain Beechey's 

 voyage in His Majesty's ship Blossom . . . , p. 7. 



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

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



1900. Dicrostonyx nelsoni Merriamf, Proc. Washington Acad. Sci., vol. 2, 

 p. 25, Mar. 14, 1900. (St. Michael, Norton Sound, Alaska.) 



1900. Dicrostonyx hudsonius alascensis Stone, Proc. Acad. Nat. Sci. Phila- 

 delphia, vol. 52, p. 37, Mar. 24, 1900. (Point Barrow, Alaska.) 



1919. Dicrostonyx rubricatus G. M. Allen, Bull. Mus. Comp. Zool., vol. 62, 

 p. 518, February 1919. 



1937. Dicrostonyx groenlandicus rubricatus Anderson, Mammals and birds 

 of the western Arctic district, Northwest Territories, Canada, in Canada's 

 Western Northland, Dept. Mines and Resources, Ottawa, p. 110, July 9, 

 1937. 



1948. D[icrostonyx] t[orquatus] rubricatus Ognev, The mammals of Russia 

 (U.S.S.R) and adjacent countries, Publ. Acad. Sci. U.S.S.R., vol. 6, pp. 479, 

 508. (Simultaneous revision will show that Dicrostonyx torquatus, Dicro- 

 stonyx rubricatus and Dicrostonyx groenlandicus are conspecific.) 



Type Locality. — American side of Bering Strait, Alaska. Range. — Tundra 

 or unforested regions of northwestern and northern coast of Alaska, from 

 mouth of Kuskokwim River and around to Arctic coast of Yukon (Herschel Is- 



