138 Bulletin American Museum of Natural History. [Vol. XI X r 



Island, collected by Dr. Berthold Laufer, in August, 1898, is 

 not appreciably different from the Gichiga series. This series 

 of 15 specimens is quite uniform in coloration, varying only 

 in the color of the lower back, which is a little deeper fulvous 

 in some of the specimens than in the type. The series differs 

 strikingly, through very much paler coloration, from a series 

 of 10 specimens in the U. S. National Museum from the 

 upper Amoor River, representing Bonhote's Tamias orien- 

 talis (Ann. and Mag. Nat. Hist. (7), IV, Nov. 1899, p. 385). 

 It has only a remote relationship, as would be expected, 

 with Eutamias senescens Miller (Proc. Acad. Nat. Sci. Phila. 

 1898, p. 349), from Pekin, China, the type of which is before 

 me. 



With proper material for comparison, the Siberian Eutamias 

 proves to be not closely related to the most northern form of 

 the genus in North America, namely, E. quadrivitiatus borealis, 

 of which I have for comparison a series of nearly 100 speci- 

 mens collected at various points in northern British Columbia. 

 The American form is fully one half less in size (as regards 

 bulk of body) , and very much darker and otherwise strikingly 

 different in coloration. 



Sciurus striatus Pallas (Nov. Spec. Quad. Glir. Ord. 1778, 

 pp. 378-384), which later became the basis of Gmelin's Sci- 

 urus striatus, a. asiaticus (Syst. Nat. I, 1788, p. 150), in- 

 cluded all the then known striped Ground Squirrels of Europe, 

 Asia, and America. His description was based on a Siberian 

 specimen, but, as usual, he failed to state the locality whence 

 his material came. He speaks of the Siberian form as frequent- 

 ing all of the wooded parts of Siberia, from the Kama and 

 Dvina Rivers eastward to Kamchatka. His description in- 

 dicates an animal with five black dorsal stripes, and with the 

 general coloration above pale lutescent. As he fails to men- 

 tion the conspicuous reddish color of the head and lower back 

 which especially distinguishes the Amoor River form (Tamias 

 orientalis Bonhote), and as his description satisfactorily char- 

 acterizes the animal of the Gichiga region, there seems to be 

 no alternative but to restrict the name asiaticus to the Gichiga 

 animal. 



