go SMITHSONIAN MISCELLANEOUS COLLECTIONS [VOL. 50 



1890 Tamias townsendii Allen, Bull. Amer. Mus. Nat. Hist., in, p. 72, 



May, 1890. 

 1897 Eutamias toivnsendi Merriam, Proc. Biol. Soc. Washington, xi, 



p. 192, July 1, 1897. 



As indicated by the above citations, Eutamias cooperi has for the 

 past 50 years been considered identical with Eutamias townsendii. 

 A comparison of the five specimens taken at 5,500 feet altitude, in 

 Paradise Park, with the only existing cotype of Tamias cooperi 

 Baird, taken at 4,500 feet altitude, Klickitat Pass, Cascade Moun- 

 tains, Skamania County, Washington, 1 and with specimens of Euta- 

 mias townsendii collected only a few weeks earlier at Portland, Ore- 

 gon, 2 makes it evident that two forms of Eutamias occur in the 

 Pacific northwest, one, E. townsendii, probably occupying the 

 Humid Transition area and the other, E. cooperi, the Hudsonian and 

 Canadian areas. 3 



Eutamias cooperi is a lighter colored and grayer animal than E. 

 townsendii ; the light dorsal stripes, especially the outer ones, are 

 distinctly gray, instead of wood-brown ; the rump is also grayer and 

 lacks the reddish cast seen in E. townsendii. The skulls of E. 

 cooperi have the rostrum a little more slender than those of E. town- 

 sendii. In many ways E. cooperi appears intermediate in characters 

 between E. townsendii and E. quadrimaculatus. The unusual gray- 

 ness of Cooper's specimens was pointed out by Allen (he. cit.), 

 who, with the limited material at hand, did not consider it more than 

 individual variation. 



Concerning the exact locality of the cotypes of Tamias cooperi 

 Baird, there seems to have been considerable confusion. The two 

 cotypes are Cat. Nos. 211 and 212, U. S. N. M., and of these the first 

 can not be found. The original label on Cat. No. 212 is simply 

 marked "Washington] Tferritory]." In the first account of the 

 species the locality is given as Cascade Mountains at 46 ; but in 

 Baird's Mammals (table, page 303) the locality for Cat. No. 212 is 

 said to be "Vancouver, Oregon T." In Coues and Allen's Mono- 

 graphs of North America Rodentia (table, page 809) the locality for 

 Cat. No. 212 is "Fort Steilacoom, Washington T." The collector of 

 the specimens, however, clears up the matter of locality by a hith- 



1 See Cooper, in American Naturalist, vol. ti, p. 531. 



2 These specimens may be regarded as topotypes, E. tozvnsendii being origi- 

 nally described from the lower Columbia River. 



3 See Piper, Confr. Nat. Herb., vol. xi, Map, Floral Areas of the State of 

 Washington. 



