ART. 1 MAMMALS FROM CHINA HOWELL. 65 



Genus MUS Linnaeus 



MUS MUSCULUS MUSCULUS Linnaeus 



[Mils] musculus Linnaeus, Syst. Xat., ed. 10, 1758, p. G2 (Sweden). • 



Speciniens. — Twentj'^-three : Peking, Chihli, 3; Kwantsao, Wei- 

 chow, 3; Suifu, Szechwan, 9; Nanking, Kiangsu, 4; and 70 miles 

 southwest of Yenpingfu, Fukien, 4. 



The Suifu specimens are dirty and misshapen and mostly prepared 

 from salted skins. The Chihli examples are also dirty. The only 

 practicable course has therefore been to refer all dark-bellied Mus to 

 musculus. Instead of being darker than typical musculus, as slnicus 

 was said to be, the material from south China averages lighter. 



MUS BACTKIANUS GANSUENSIS Satunin 



Mus [Legc/ada] gansuensi.s Satunin, Ann. Mus. Zool. Acad. Imp. Sei. St. 

 Petersb., vol. 7, 1908, p. 504 (Tschortentan. Kansu, China). 



/Specimens. — Two from 128 to 157 miles west-northwest of Pao- 

 touchen. Inner Mongolia, and the following from Kansu ; near 

 Xinghsia and up to 60 miles west thereof, 7; Lanchow, 1 ; and 25 miles 

 southeast of Sining. 



I shall follow the example of G. M. Allen (1927) in placing the 

 races of white-bellied Mu^ of China under the species hactrianvjS 

 rather than vxigneri as usual; but there are no undoubtedly tj'pical 

 specimens of the former available. This series is very pale, with 

 short tail (about 45 per cent of the total length), and without a buffy 

 throat patch. 



MUS BACTRIANUS MONGOLIUM Thomas 



Mus wagnerl mongollnm Thomas, Proc. Zool. Soc. London, 1908, p. 106 (100 

 miles northwe.st of Kalgan, Mongolia). 



Specimens. — Fourteen : 3 from near Taiyuanfu, Shensi, and the 

 following from Chihli: Tabul, 6; 80 miles east of Peking, 3; and 

 Tientsin, 2. 



The Tabul specimens are virtual topotypes and were compared by 

 G. S. Miller with the typical series at the British Museum. These 

 fourteen skins average much darker than the material from Kansu, 

 which I am justified in considering to represent gansuensis. Hence, 

 I can not agree with G. M. Allen (1927) in placing in synonymy 

 under the latter the name mongolium. 



MUS BACTRIANUS MANCHU Thomas 



Mus uiagneri mmicliu Thomas, Ann. Mag. Nat. Hist., ser. 8, vol. 4, 1909, 

 p. 502 (Chuchiatai, near Changchun, Kirin, Manchuria). 



Specimens. — Seven from Manchuria : 60 miles southwest of Kirin, 

 5, and 180 miles up the Yalu River, 2. 

 This race is considerably darker than mongolium. 

 21776—29 5 



