NO. 1990. MAMMALS FROM THE ALTAI MO UNTAINS—HOLLISTER. 521 



SICISTA NAPiEA Hollister. 



1912. Sicista napaea Hollister, Smiths. Misc. Coll., vol. 60, No. 14, p. 2, 

 November 29. 



A single specimen of this jumping mouse was trapped in the damp 

 pine forest 5 miles south of Tapucha, August 6. It was caught in a 

 densely grown part of the woods near the border of extensive open 

 alplands, at 6,875 feet elevation. 



ALLACTAGA GRISESCENS Hollister. 



1912. Allactaga grisescens Hollister, Smiths. Misc. Coll., vol. 60, No. 14, p. 2, 

 November 29. 



Two specimens from the center of the Chuisaya Steppe, near the 

 banks of the upper Chuya River, 8 mUes south of Kosh-Agatch, 

 July 28. One of these was trapped; the other was shot by Kain on 

 the open steppe just before dark. A few burrows, too large for 

 Phodopus, which were seen on the steppe were doubtless the dens 

 of these jerboas. As stated in the original description, this new 

 species seems related only to Allactaga mongolica and its subspecies 

 longior. It is possibly confined to the Chuisaya Steppe, the fauna 

 of • which is decidedly Mongolian, as might be expected from its 

 isolation from the great Siberian plains and its connection with the 

 northern extensions of the Gobi, the Kobdo and Suok Plains, by the 

 Tarkuta, Tchegan-Burgazi, and Bain-Chagan Passes. 



The Kalmuks call this jerboa "yeV-maJin." 



MARMOTA CENTRALIS (Thomas). 



1909. Arctomys centralis Thomas, Ann. and Mag. Nat. Hist., ser. 8, vol. 3, p. 260, 

 March. 



Four skins and skulls and four odd skulls from the Tchegan- 

 Burgazi Pass. The skin of this marmot is one of the chief articles 

 of trade from the natives. We saw great bales, containing hun- 

 dreds of skins each, in the trading post at Kosh-Agatch, and the 

 trader informed us that he had only a short time before sent a large 

 shipment to Biisk. The animal is known to all the natives by the 

 Russian nam.e ^'su-roclc'." 



The Altai marmot was first separated by Brandt, but his name 

 for the animal appears to be a nomen nudum, in every instance of 

 its use, down to Kastschenko's paper on the Results of the Tomsk 

 Altai Expedition in 1899. In the meantime the name has become 

 valid as a synonym of Marmota hohaTc in Trouessart's Catalogue of 

 Mammals, 1897. The Marmota centralis of Thomas, from the north- 

 ern Tian-Schan seems to be identical with the Altai form, however, 

 so the species is provided with a name. The relationships seem close 

 with the Transbaikal Marmota sihirica, of which centralis will doubt- 

 less prove to be a subspecies. 



