1899. Lepus labradorius Miller, Proc. Biol. Soc. Washington, 13:39, May 29, type from Fort Chimo, Ungava, Canada.
1924. Lepus arcticus labradorius, G. M. Allen and Copeland, Jour. Mamm., 5:12, February 9.
1902. Lepus arcticus canus Preble, N. Amer. Fauna, 22:59, October 31, type from Hubbart Point, W coast Hudson Bay, Keewatin.
Marginal records (A. H. Howell, 1936:323).—Franklin: Pangnirtung Fiord; Nunata, Kingua Fiord; Cumberland Sound, Blacklead Island; Weddell Harbor, Frobisher Bay. Labrador: Ramah; Solomons Island, near Davis Inlet. Quebec: type locality; Great Whale River, Hudson Bay; Belcher Islands. Manitoba: Fort Churchill; Hubbart Point. Keewatin: Cape Fullerton; Southampton Island. Franklin: Cape Dorset; Camp Kungovik, W coast Baffin Island, 65° 35´ N lat.; Nettilling Fiord.
Lepus arcticus monstrabilis Nelson.
1934. Lepus arcticus monstrabilis Nelson, Proc. Biol. Soc. Washington, 47:85, March 8, type from Buchanan Bay, Ellesmere Island.
Marginal records.—Franklin (A. H. Howell, 1936:329): Cape Sheridan; Craig Harbor; Dundas Harbor, Devon Island.
Lepus arcticus porsildi Nelson.
1934. Lepus arcticus porsildi Nelson, Proc. Biol. Soc. Washington, 47:83, March 8, type from near Julianehaab, 61° 20´ N lat., Greenland.