Vol. XI, pp. 189-212 July 1, 1897 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



NOTES ON THE CHIPMUNKS OF THE GENUS EUTA- 



MIAS OCCURRING WEST OF THE EAST BASE 



OF THE CASCADE-SIERRA SYSTEM, WITH 



Dli:SCRIPTIONS OF NEW FORMS. 



BY C. HART MERRIAM. 



Owing to the unfortunate delay in bringing out the first volume 

 of the Death Valley Expedition report, it is thought desirable 

 to publisli at once certain descriptions and remarks on Chip- 

 munks that were written for this report in 1893. With these 

 have been iucorporated additional notes, and descriptions of two 

 new s|)ecies, obtained daring subsequent explorations by the 

 Biological Survey, both in the area covered by the original ex- 

 pedition and in adjacent territory on the north. 



It will be observed that the name Eatamids, proposed by 

 Trouessart in ISSO-^'- as a subgenus of Tamias, is here adopted as 

 a full genus. This is because of the conviction that the super- 

 ficial resemblance between the two groups is an accidental 

 l)arallelism in no way indicative of affinit3\ In fact, the two 

 groups, if my notion of their relationships is correct, had very 

 different ancestors — TaniUih being an off'shoot from the ground 



*Catal. Mainin. Viv. et Foss., Rongeurs, 86, 1880. As originally pro- 

 posed the name included four very different animals: asiaticus Gm., 

 hnrrtsi And. & Bach., lateralis Say, and hccidens Cope (fossil). The fossil 

 Ixnldens 1 liave not seen, but Iiarrisi was placed by me in Ammosper- 

 mophiins in 1892, and lateralis is the type of a very distinct subgenus of 

 SpennophUait, which I here name Callospermophilus. The type of Eutaiaiaa 

 was fixed on Tainiasa-^iaticHs Gm. by Allen in 1894 (Proc. Linn. Soc. N. Y. , 

 p. 26, July, 189-4). 



45— Biol. Soc. Wash., Vol. XI, 1897 (189) 



