1900.] MUS SYLVATICUS AND ITS ALLIES. 413 



Antedates Mus wagneri var. major, N. Severtzoff, 1876 (see 

 under M. s. arianus), and Mus decumanus var. major, B. Hoffmann, 

 Abh. Zool. Mus. Dresden, 1887, p. 18. 



Mus chevrieri, E. Biichner, Wiss. Res. der von N. M. Przewalski 

 nach Central-Asien unternommenen Reisen &c, Siiugethiere, p. 92 

 (1889). 



Type : unknown (? in the Caucasian Museum at Tiflis). 



Distinguishing Characteristics. I have no specimens of this Mouse 

 at my disposal. Radde describes it as a large sylvaticus, resembling, 

 but distinguishable from, the larger Eastern European Mice. 



Distribution. Of the distribution of this, the Western Siberian 

 representative of M. s. prineeps, we have no exact kuowledge, but 

 we know that Herr Radde found Mus sylvaticus, of one form or 

 another, wherever he journeyed in Western Siberia. With this 

 form I must place, at least provisionally, Przewalski's specimens 

 as described by Herr Biichner. Przewalski found Mus sylvaticus 

 in the mountains of Ganssu, Ala-schan, to a height of 8000 

 metres, and it is recorded for the Muni-ula, where it lives in holes 

 in meadow-lands. 



14. MUS SYLVATICTJS ARIANUS. 



M us sylvaticus, E. de Filippi, Viagg. Persia, p. 344 (1865); K. 

 Satunin, Mammals of Caucasus, p. 305, &c. 



Mus erythronotus, W. T. Blanford, Ann. & Mag. Nat. Plist. xvi. 

 p. 311 (i875); Eastern Persia, Zool. & G-eol. vol. ii. pp. 54-55, 

 pi. v. fig. 3 (1876) ; Mammals of Tarkand Expedition, p. 54(4879) 

 (nee Mus erythronotus, C. J. Temminck, Eauna Japoniea, Mamm. 

 p. 50, 1850). 



Mus arianus, W. T. Blanford, Ann. & Mag. Nat. Hist. vii. p. 162 

 (1881). 



"Mus wagneri, var. major (M. tokmak u. sp. ?)," Severtzoff, 

 Proc. Mosc. Soc. Nat. vol. viii. p. 2 (1873), translated by J. Carl 

 Craemers in Ann. & Mag. Nat. Hist, xviii. 1876 (see p. 53) ; 

 Blanford, Mammals of Tarkand Mission, loc. cit. ; E. Biichner, 

 op. cit. p. 90 ; W. L. Sclater, P.Z. S. 1890, p. 528. 



Typical series. Four specimens from Kohrud, between Isfahan 

 and Teheran, in Northern Persia, altitude 7000 feet (Indian 

 Museum at Calcutta), and one, no. 74.11.21.22, anno 1872 

 (British Museum Collection). 



Nomenclature and Synonymy. The name erythronotus Blanford, 

 being preoccupied by erythronotus Temminck, the former naturalist 

 renamed his species arianus, under which name I have to designate, 

 for the present at least, the Mice from very widely separated 

 localities and which probably include several distinct subspecies. 

 Severtzoff's subspecific name is preoccupied by Radde's Mus sylva- 

 ticus var. major. Mus wagneri itself is a Mus musculus-like Mouse. 

 Severtzoff's original description is, as Blanford has pointed out 

 (Mamm. Yark. Mission, p. 54), insufficient to enable his species to 

 be recognized, and it is far from clear whether " M. tokmalc " is pro- 

 posed as a name, Tokmak being " the name of a town between 

 Vernoe and Aulhita, lying north-west of Lake Issik and nearly due 



