_Remarks._--In comparing specimens obtained by Alcorn with published descriptions of _O. collaris_ in Howell (1924:35), it appeared that measurable geographic variation might be present in this monotypic species. Accordingly, comparisons were made with materials in the Biological Surveys collection of the U. S. National Museum, the Provincial Museum, Victoria, B. C., and the National Museum of Canada. A comparison of specimens of similar ages showed that no subspecific separation is justified although animals from the Yukon Territory, British Columbia, and Northwest Territories, as compared with available material from Alaska, tend to be grayer in color and longer in total length with a slightly larger skull and greater alveolar length of molariform tooth-row in both upper and lower jaws. Specimens used for comparison were from the following localities: _Alaska_: Mts. near Eagle (USBS), 15; 200 mi. S Fort Yukon (USBS), 2; Upper Little Delta River, Glacier Creek, Mt. Hayes region (USBS), 1; Glacier Creek, Mt. Hayes region (USBS), 3; Little Delta River, Slate Creek, Red Mt. Camp, Mt. Hayes region (USBS), 1; Muldron Glacier, Mt. McKinley (USBS), 2; Mt. McKinley (USBS), 3; Summit of Chugach Mts., on Richardson Highway, N of Valdez (USBS), 1; Chitina River Glacier (Nat. Mus. Canada), 3. _Yukon Territory_: McMillan Pass, Canol Road, mile 282 (Nat. Mus. Canada), 2; Rose River, Canol Road, mile 95 (Nat. Mus. Canada), 8; Tepee Lake (Nat. Mus. Canada), 1; Conrad (Nat. Mus. Canada), 1; near Teslin Lake (Nat. Mus. Canada), 1. _Northwest Territories_: headwaters of Caracajou River, Canol Road, mile 111E (Nat. Mus. Canada), 1. _British Columbia_: White Mt., Moose Arm, Tagish Lake, Atlin (Prov. Mus., Victoria, B.C.), 2. Lepus americanus macfarlani Merriam Varying Hare _Lepus americanus macfarlani_ Merriam, Proc. Washington Acad. Sci., 2:30, March 14, 1900. (Type from Fort Anderson, near mouth of Anderson River, Mackenzie, Canada.) _Specimens examined._--Total 3, as follows: _Yukon Territory_: W side Lewes River, 2150 ft., 2 mi. S Whitehorse, 1; 5 mi. W Teslin River, 2400 ft., 16 mi. S and 53 mi. E Whitehorse, 1. _British Columbia_: 14 mi. N Fort Halkett, W side Smith River, 1. _Remarks._--Alcorn reports seeing few hares on his two trips to Alaska. Near the Miniker River, a geologist told him that the numbers of these animals had steadily declined since 1943. One of three seen in a spruce forest on July 8, 1947, near Whitehorse was taken by Alcorn. A young one was captured in a rat trap in a building near the Teslin River on July 5 of the same year. Tamiasciurus hudsonicus columbiensis A. H. Howell Red Squirrel _Tamiasciurus hudsonicus columbiensis_ A. H. Howell, Proc. Biol. Soc. Washington, 49:135, August 22, 1936. (Type from Raspberry Creek, about 30 mi. SE of Telegraph Creek, northern British Columbia.)