1900. _Lepus americanus dalli_ Merriam, Proc. Washington Acad. Sci., 2:29, March 14, type from Nulato, Alaska. _Marginal records._--Noatak River (Bailey and Hendee, 1926:21); Upper St. John River (Rausch, 1950:466); Koyukuk (Nelson, 1909:102); Anvik (_ibid._); Yukon Delta (_ibid._); thence northerly, in suitable habitat, along coast to Noatak River. LEPUS AMERICANUS KLAMATHENSIS Merriam. 1899. _Lepus klamathensis_ Merriam, N. Amer. Fauna, 16:100, October 28, type from head of Wood River, near Fort Klamath, Klamath County, Oregon. 1936. _Lepus americanus klamathensis_, V. Bailey, N. Amer. Fauna, 55:95, August 29. _Marginal records._--Oregon (Dalquest, 1942:176): Mt. Hood; mouth Davis Creek. California (Orr, 1940:53): vicinity Fort Bidwell; 3000 ft., Rush Creek, 12 mi. from [N of] Weaverville. _Oregon: Estacada_ (Dalquest, 1942:176). LEPUS AMERICANUS MACFARLANI Merriam. 1900. _Lepus americanus macfarlani_ Merriam, Proc. Washington Acad. Sci., 2:30, March 14, type from Fort Anderson, near mouth of Anderson River, Mackenzie. 1900. _Lepus saliens_ Osgood, N. Amer. Fauna, 19:39, October 6, type from Caribou Crossing, between Lake Bennett and Lake Tagish, Yukon. 1907. ? _Lepus niediecki_ Matschie, Niedieck's Kreuzfahrten im Beringmeer, p. 240, type locality Kasilof Lake, Kenai Peninsula, Alaska. _Marginal records_ (Nelson, 1909:100, unless otherwise noted).--Mackenzie: type locality; Fort Franklin; Fort Rae; Fort Resolution; Fort Smith. British Columbia: Peace River and Alaska Highway (Anderson, 1947:101); Bennett. Alaska: Cordova (Philip, 1939:84); Mills Creek (_ibid._); Lake Clark; E. Fork Kuskokwim River (Dice, 1921:27); head N. Fork Kuskokwim (_ibid._); Fort Yukon. Yukon: Russell Mts. LEPUS AMERICANUS OREGONUS Orr. 1934. _Lepus bairdii oregonus_ Orr, Jour. Mamm., 15:152, May 15, type from 12 mi. S Canyon City, 5500 ft., Grant County, Oregon. 1942. _Lepus americanus oregonus_, Dalquest, Jour. Mamm., 23:179, June 3. _Marginal records._--Oregon (Dalquest, 1942:180): 22 mi. N Enterprise; _Wallowa Lake_; _summit of Blue Mts._; Ochoco Nat'l Forest, Harney County. 1938. _Lepus americanus pallidus_ Cowan, Jour. Mamm., 19:242, May 12, type from Chezacut Lake, Chiloctin River, British Columbia. LEPUS AMERICANUS PALLIDUS Cowan. _Marginal records._--British Columbia: 23 mi. N Hazelton (Dalquest, 1942:183); Berg Lake (_ibid._); Quesnel (Cowan, 1938:243); Lac La Hache (_ibid._); Bonaparte River, 5 days N Ashcroft (Dalquest, 1942:183); Kimsquit, Dean Channel (Anderson, 1947:102); Hazelton (Dalquest, 1942:183). LEPUS AMERICANUS PHAEONOTUS J. A. Allen. 1899. _Lepus americanus phaeonotus_ J. A. Allen, Bull. Amer. Mus. Nat. Hist., 12:11, March 4, type from Hallock, Kittson County, Minnesota.