Mar. 1898. NORTH AMERICAN MAMMALS ELLIOT. 197 



ing one of the adults, with the flanks richly colored, and this 

 would seem to be the first dress they assumed. 



8. Tamias amaenus. 



Tamias amaenus. Allen:, Bull. Am. Mus. Nat. Hist., vol. iii., 

 1890-91, p. 90. 



Sixty-one specimens, as follows : Hermit Valley, Calaveras 

 Co., 5; Bloods, Calaveras Co., i; Echo, Eldorado Co., 2; 

 Pyramid Peak, Eldorado Co., 27 ; Woodford, Alpine Co., 2 ; 

 Silver Lake, Amidor Co., 19 ; Edgewood, Douglas Co., Nev., 4 ; 

 Anderson River, Douglas Co., Nev., i. 



The examples were taken in the months of June, July and 

 August, and represent adults and young from the worn win- 

 ter pelage to that of the post-nuptial, in which latter dress it 

 closely resembles T. frater, but is considerably smaller. The 

 specimens from Douglas Co., Nevada, resemble the next species 

 from Mt. Siegel, and being young are not much different in 

 size, but are readily distinguishable by the darker central por- 

 tion of the tail beneath, and also in having the tail thicker and 

 more bushy. In the winter pelage, probably because the fur is 

 longer and more dense than that of the post-nuptial, the stripes 

 on the dorsal region are not so distinct, being much less sharply 

 defined. 



9. Tamias minimus pictus. 



Tamias minimus pictus. Allen., Bull. Am. Mus. Nat. Hist., 

 vol. iii., 1890-91, p. 115. 



Seventeen specimens, all from Mt. Siegel, Douglas Co., 

 Nevada. These resemble to a certain extent examples of T. 

 amanus, and are all apparently in post-nuptial pelage, having 

 been taken in the latter part of July. They are smaller in their 

 measurements, but with rather longer hind feet, a short, thinly- 

 furred tail, and the central portions beneath a very pale buff, as 

 are also the legs and feet. The stripes on the dorsal region are 

 very distinct, and those on each side of the central blackish- 

 brown stripe, are a clear light gray. 



10. Tamias chrysodeirus. 



Tamias chrysodeirus. Merr. Nor. Am. Fauna, 1890, No. 4, p. 

 19. 



Sixty-two specimens from the following localities : Hermit Val- 



