428 



ON MU8 SYLVATICUS AND ITS ALLIES. 



[Apr. 3, 



Three of typical series as measured 

 by Herr E. Biichner. 



No. 82.6.16.7 of British Mus. coll., 

 South Sbensi, China, Pere 

 David. (Dimensions taken from 

 dried skin.) 



90 



75 



205 



91 



83 



95 



91 



*20 



15 



25 



* Tail perhaps damaged. 



Mus sylvaticus draco. 



cJ. No. 98.11.1.20, Kuatun, 



Bohea Mts., N.W. Fokien, S.E. 



China, April 18, 1898, J. D. La 



Touche. 

 $>. No. 98.11.1.21, ditto, ditto,' 



April 27, 1898. 



* This item from dried skin only ; those of head and body and tail are collector's 

 measurements converted from inches. 



25 



25 



* Dimensions from the dried skin ; these increase to 19'5 and 13 when the skin is wet. 

 t Collector's dimensions reduced from inches. 



EXPLANATION OF PLATE XXV. 



Geographical variation in Mus sylvaticus, as illustrated by (fig. 1) M. s. prineeps 

 (p. 408), the large light form of Roumania ; (fig. 2) M. s, celticus (p. 401), the small dark 

 form of Co. Kerry, Ireland. 



,UG.;300 



