frotn Nvrllura and Central Mutitc/tun'a. 503 



Going castwaivl.s from the dry region of the Mongolian 

 n.ttt'au ami Siicosi, wo get again a still daiker fortn of the 

 Mas viusculus group tlian the one I named M. wngneri 

 moiif/dlium in 19iJ8*. The specimens are quite uniformly 

 darker, tluir ^ides being about a.s dark as are the central 

 dorsal areas of the paler torm-s. The mice obtained by 

 i\lr. Anderson at the Imperial Tombs to the east of Peking 

 are intermediate in colour as in locality. 



All these mice would seem to be wild-living forms, not 

 true house-mice. 



10. Cricetulus griseu.t fumatus, subsp. n. 



5 c? , 1 ? • Chu Chia Tai, Kirin Province. 

 J (}Oung). Fan Cliia Tun, Kirin Province. 



Essential characters as in C. griseus, but the colour 

 darkened throughout. General colour above between broc- 

 coli-brown and hair-brown of Ridgway. Black dorsal line 

 lieavier, more distinct/ and carried forward more definitely 

 on to tlie crown of tiie head. Under surface grey no. 8, the 

 tips of the hairs grey no. 10. 



kSkull quite as in true griseus. 



Dimensions of the type (measured in the flesh) : — 



Head and body ]08 mm.; tail 29; hind foot 16'5; 

 ear 10. 



Skull : greatest length 28"5 ; upper molar series 3'8. 



H lb. (of type). Chu Chia Tai, near Chang Chun, Kirin 

 Province. 



Ti/pe. Adult male. Original number 97. Collected 27 

 Auj;ust, 1908. 



This Mantcliurian race of the common striped hamster of 

 N. China is readily distinguishable by the general darkening 

 of its colour, and the greater development of its dorsal dark 

 line. 



11. Evotomys rutilus, Pall. 

 2 cJ , 3 ? . Khingan Mts. 



12. AJyospalax psilurus, M.-Edw. 



5 cJ , 5 ? • Khingan. 



Tlie most careful comparison of these specimens with 

 three examples of J/, psilurus from between Peking and 

 Tientsin, therefore practically topofypical, presented by 

 Mr. E. B. Howell, fails to show the very slightest difference, 



♦ P. Z. S. 1908, p. 106. 



