_Specimens examined._--Total 18, as follows: _Yukon Territory_: McIntyre Creek, 2250 ft., 3 mi. NW Whitehorse, 1; W side Lewes River, 2150 ft., 2 mi. SW Whitehorse, 1; 2 mi. W Teslin River, 2400 ft., 16 mi. E Whitehorse, 1. _British Columbia_: 1 mi. NW jct. Irons Creek and Liard River, 1; ¼ mi. S jct. Trout River and Liard River, 3; S side Toad River, 10 mi. S and 21 mi. E Muncho Lake, 3; Summit Pass, 4200 ft., 10 mi. S and 70 mi. W Fort Nelson, 8. _Remarks._--Rand (1944:42) experienced difficulty in assigning subspecific names to red squirrels taken along the Alaska Highway in northern British Columbia. Some variability as found by Rand is noted in adults taken by Alcorn in this area. All of the specimens assigned to _T. h. columbiensis_ have a darker tail and more tawny feet than _T. h. preblei_. The average of skulls of adults is smaller than the skull of an adult of _T. h. preblei_ from Yerrick Creek, Alaska. Alcorn obtained most of the squirrels in rat traps and steel traps, using "chewed" rolled oats as well as bits of fish and mouse bodies as bait. Tamiasciurus hudsonicus petulans (Osgood) Red Squirrel _Sciurus hudsonicus petulans_ Osgood, N. Amer. Fauna, 19:27, October 6, 1900. (Type from Glacier, White Pass, Alaska.) _T[amiasciurus]. hudsonicus petulans_ A. H. Howell, Proc. Biol. Soc. Washington, 49:136, August 22, 1936. _Specimens examined._--Total 7, as follows: _Alaska_: 1 mi. S Haines, 5 ft., 2. _Yukon Territory_: SW end Dezadeash Lake, 1; 1½ mi. E Tatshenshini River, 1½mi. S and 3 mi. E Dalton Post, 4. _Remarks._--Specimens from extreme southwestern Yukon Territory appear to be referable to this subspecies. The one adult female (skull only, with body measurements) from the southwestern end of Dezadeash Lake has a shorter skull than does any adult female of _T. h. columbiensis_. No skins of adults are in the series, but the skins of three subadults have darker upper parts, a darker tail and less olivaceous sides than _T. h. columbiensis_. Tamiasciurus hudsonicus preblei A. H. Howell Red Squirrel _Tamiasciurus hudsonicus preblei_ A. H. Howell, Proc. Biol. Soc. Washington, 49:133, August 22, 1936. (Type from Fort Simpson, Mackenzie District, Northwestern Territories.) _Specimens examined._--Total 3, as follows: _Alaska_: Chatanika River, 700 ft., 14 mi. E and 25 mi. N Fairbanks, 1; N side Salcha River, 600 ft., 25 mi. S and 20 mi. E Fairbanks, 1; Yerrick Creek, 21 mi. W and 4 mi. N Tok Junction, 1. _Remarks._--In comparison with specimens of _T. h. hudsonicus_ from Iskwasum Lake, District of the Pas, Manitoba, the squirrel from Yerrick Creek, an adult female, is larger and paler on the upper parts and tail. The squirrel taken at Yerrick Creek was captured in a rat trap; Alcorn found these animals to be "fairly common" in that area. He obtained no evidence that the natives use them for food. Marmota monax ochracea Swarth Woodchuck