Citellus columbianus ruficaudus [Howell], Proc. Biol. Soc. Washington, 41:212, December 18, 1928.
Type.—Obtained at Wallowa Lake, Wallowa County, Oregon, by G. G. Cantwell on April 13, 1919; type in United States National Museum.
Racial characters.—Similar to Citellus columbianus columbianus but tail redder, especially above, and red color everywhere deeper.
Distribution.—Restricted to the Blue Mountains of extreme southeastern Washington.
Remarks.—This is at best a slightly differentiated race and upon further study, animals assigned to it may prove unworthy of recognition as a distinct subspecies.
Citellus beecheyi douglasii (Richardson)
Beechey ground squirrel
Arctomys? (Spermophilus?) douglasii Richardson, Fauna Boreali-Americana, 1:172, 1829.
Spermophilus douglasii F. Cuvier, Sup. a l'hist. natur. Buffon, 1:333, 1831.
[Spermophilus grammurus] var. douglasii [Allen], Proc. Boston Soc. Nat. Hist., 16:293, 1874.