1903.] Allen ^ Mammals from Northeast Siberia. 139 



Schreber, with his usual astuteness, properly discriminated 

 the Asiatic animal as different from the American, as "A. Das 

 asiatische," but failed to give it a technical name, which was 

 first supplied later by Gmelin, as above cited. 



"Russian name, Bur-un-d6ok. Abundant at Ayan, Ok- 

 hotsk, and Ola, common at Gichiga and Pengina, and present 

 at Marcova. At Gichiga they are confined to the upper 

 stretches of the rivers where the larch (Lams sibirica) grows, 

 and to the patches of recumbent stone-pine (Cembra pumila) 

 along the seacoast. I spent the second week in July, just at 

 the height of the mosquito season, encamped at the junction 

 of the Gichiga and Chooma rivers. The country between 

 these streams is a park-like expanse of dry, level country, 

 covered with an open growth of Siberian larch, and with 

 tangled masses of willows close to the river-banks. Under the 

 trees is a thick growth of grass and flowers. I am certain that 

 the chipmunks were very common, although I secured only 

 ten, nine males and one female, during five days of almost con- 

 tinuous tramping through these woods, and heard but two 

 more. Eight of the ten were feeding on the green cones in 

 the tops of the larch trees, where they would remain motion- 

 less and allow me to approach to the foot of the trees. The 

 other two were startled from the grass and immediately ran 

 up trees. Most of the females taken had been nursing young. 

 They retire to their winter quarters the last week in October 

 and do not come out again until the first week of the follow- 

 ing June. At Ayan I saw several of them during the first 

 week of August feeding on the green cones of Larus ayensis, 

 which there crowd the little valley, quite down to the beach. 

 Mr. Sokolnikoff says that they occur along the Yeropole and 

 Main rivers, tributaries of the Anadyr, northeast of Marcova. 

 Several of the chipmunks killed at Christova had their cheek 

 pouches filled with the green seeds of the larch and larvae of 

 a large ant abundant there in the woods." N. G. B. 



9. Citellus * buxtoni, sp. nov. 

 EAST SIBERIAN SPERMOPHILE. 



Type, No. 18403, $ ad., Gichiga, west coast of Okhotsk Sea, Siberia, 

 August 19, 1901; N. G. Buxton, Jesup North Pacific Expedition. 

 Cf. Allen, this Bulletin, XVI, 1902, p. 375- 



