Oreamnos montanus [Merriam], Science, n. s., 1:19, 1895.
Oreamnos montanus montanus [Miller], U. S. Nat. Mus. Bull., 79:398, December 31, 1912.
Oreamnos americanus americanus Hollister, Proc. Biol. Soc. Washington, 25:186, December 24, 1912.
Type.—None. Descriptions all based on Ovis montanus Ord who, in turn, based his description on the account of skins seen by Lewis and Clark on the Columbia River of Washington or Oregon. As the mountain goat is not known to have ever occurred in Oregon in Recent times, the type locality is probably near Mt. Adams, Washington, the point where goats come nearest the Columbia.
Measurements.—The measurements of a large male killed "west of North Yakima" were reported by A. S. Harmer as: 8 feet 3 inches from tip of nose to tip of tail; horns 10 inches; weight 507 pounds (Outdoor Life, 1915: 459).
Distribution.—Throughout the higher Cascade Mountains.
Oreamnos americanus missoulae [Allen]
Oreamnos montanus missoulae [Allen], Bull. Amer. Mus. Nat. Hist., 20:20, February 10, 1904.
Oreamnos americanus missoulae Hollister, Proc. Biol. Soc. Washington, 25:186, December 24, 1912.
Type.—Obtained at Missoula, Missoula County, Montana; type in American Museum of Natural History.