1934. _Lepus arcticus persimilis_ Nelson, Proc. Biol. Soc. Washington, 47:84, March 8, type from S side Clavering Island, east Greenland. _Marginal records._--Greenland (A. H. Howell, 1936:331): Cape Alexander; on east coast to Francis Joseph Fiord; on west coast to _Nugsuak Peninsula_; Disko Island; Holsteinsborg. LEPUS ARCTICUS LABRADORIUS Miller. 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. _Marginal records._--Greenland (A. H. Howell, 1936:332): Sukkertoppen; _Neria, 61° 36´ N lat_.; 60° 42´ N lat. =Lepus townsendii= White-tailed Jack Rabbit Total length, 565-655; tail, 66-112; hind foot, 145-172; ear from notch (dry), 96-113. Upper parts grayish brown; tail all white or with dusky or buffy mid-dorsal stripe which does not extend onto back; white in winter in northern parts of its range. Two adult males weighed 2945 and 2494 grams (Orr, 1940:43) and there are 3 to 6 young in a litter. [Illustration: FIG. 46. Distribution of _Lepus townsendii_. 1. _Lepus townsendii townsendii_ 2. _Lepus townsendii campanius_ ] LEPUS TOWNSENDII CAMPANIUS Hollister. 1837. _Lepus campestris_ Bachman, Jour. Acad. Nat. Sci. Philadelphia, 7:349, not of Meyer, 1790; type locality plains of the Saskatchewan, probably near Carlton House. 1915. _Lepus townsendii campanius_ Hollister, Proc. Biol. Soc. Washington, 28:70, March 12.