Total length, 480-678; tail, 34-80; hind foot, 132-174; ear from notch (dry), 70-84. Upper parts gray in summer in southern subspecies; in others white; in winter white in all subspecies, except black tips of ears. Weights of lean individuals reach 12 pounds. Hopping on the hind feet without touching the forefeet to the ground has repeatedly been recorded for this species. There are four to eight young in a litter. [Illustration: FIG. 45. Distribution of _Lepus othus_ and _Lepus arcticus_. 1. _L. o. othus_ 2. _L. o. poadromus_ 3. _L. a. groenlandicus_ 4. _L. a. porsildi_ 5. _L. a. monstrabilis_ 6. _L. a. arcticus_ 7. _L. a. andersoni_ 8. _L. a. labradorius_ 9. _L. a. bangsi_ ] LEPUS ARCTICUS ARCTICUS Ross. 1819. _Lepus arcticus_ Ross, Voyage of Discovery, ed. 2, vol. 2, appendix 4, p. 151, type locality Possession Bay, Bylot Island, lat. 73° 37´ N. 1819. _Lepus glacialis_ Leach, in Ross, Voyage of Discovery, ed. 2, vol. 2, p. 170, type locality same as for _Lepus arcticus_ Ross. _Marginal records._--Franklin: type locality; Egukjuak, 8 mi. E Pond Inlet, Baffin Island (A. H. Howell, 1936:322); W coast Baffin Island, 67° 30´ (Anderson, 1947:96); Winter Island, Melville Peninsula (A. H. Howell, 1936:321); Repulse Bay, Melville Peninsula (_ibid._) LEPUS ARCTICUS ANDERSONI Nelson. 1934. _Lepus arcticus andersoni_ Nelson, Proc. Biol. Soc. Washington, 47:85, March 8, type from Cape Barrow, Coronation Gulf, Northwest Territory. _Marginal records_ (A. H. Howell, 1936:328).--Franklin: Cape Kellett, Banks Island; Cambridge Bay, Victoria Island. Mackenzie: Bathurst Inlet; Backs River near Lake Beechey; Lake Hanbury; Fort Rae; Fort Anderson. LEPUS ARCTICUS BANGSII Rhoads. 1896. _Lepus arcticus bangsii_ Rhoads, Amer. Nat., 30:253[=236 of March issue], author's separates (preprints) published February 20, 1896, type from Codroy, Newfoundland. _Marginal records_ (A. H. Howell, 1936:327).--Labrador: Hopedale; Makkovik. Newfoundland: Saint Johns; type locality; Mt. St. Gregory. LEPUS ARCTICUS GROENLANDICUS Rhoads. 1896. _Lepus groenlandicus_ Rhoads, Amer. Nat., 30:254(=237 of March issue), author's separates (preprints) issued February 20, type from Robertson Bay, NW Greenland. 1934. [_Lepus arcticus_] _groenlandicus_, Nelson, Proc. Biol. Soc. Washington, 47:83, March 8. 1912. _Boreolepus groenlandicus_, Barrett-Hamilton, Hist. British Mammals, pt. 12, p. 298, October. 1930. _Lepus variabilis hyperboreus_ Pedersen, Medd. om Grönland, 77:363, no type or type locality designated but name applied to hares of east Greenland in the general vicinity of Scoresby Sound (preoccupied by _Lepus hyperboreas_ Pallas, Zoogeographica Rosso Asiatica, 1:152, 1831, a species of _Ochotona_).