968 MR. OLDFIELD THOMAS ox [DeC. 15, 



S. 1720,1824. 2. 1716, 1722. ISTear Yeii-an-fu, Shen-si. 

 3800'. 



$ . 1981. 20 miles S.W. of Mng-wu-fu, Shan-si, 6600'. 



" )So far always found living among the rocky precipitous sides 

 of canyons where bushes are plentiful and some trees exist, 

 l^owhere common. One of their foods is the kernel of the wild 

 peach. 



" This squirrel has cheek-pouches like those of Chipmunks." — 

 M. P. A. 



9. EUTAMIAS ASIATICUS SENESCE^"S Mill. 



<S . 2004, 2005, 2006, 2007. $. 2008. Mon-tou-ko, 15 

 miles W. of Peking. 500'. Topotyj^es. 



This interesting series of topotypes, which Mr. Anderson 

 obtained at my special request, and those next following, form a 

 most valuable addition to our collection of Asiatic Chipmunks 

 and have enabled me to gather a general idea of their local 

 characteristics. 



In the first place, it appears evident that none of the forms 

 other than the original E. asiaticus can be properly called species, 

 as all grade into one anothei-, each series vaiying to a certain 

 extent, and overlapping the members of the next. All seem to 

 be in fact members of one widely distributed species, modified by 

 local conditions, and one sees no sign of what is often found in 

 Korth America, where representatives of cpiite distinct species 

 may be found taking each other's place in neighbouring localities. 

 Of course in IST. America a much greater richness in difierent 

 types is present to be drawn upon, while here all are modifi- 

 cations of E. asiaticics. 



These main modifications appear to be four in nmnber, so far 

 as we yet know : — (1) The sharply defined black and white five- 

 lined asiaticus of Russia and Siberia ; (2) a more rufous form 

 inhabiting Saghalien, Hokkaido, the Amui- region and Korea, to 

 which the names of uthensis, lineatus, and orientalis are assign- 

 able ; (3) the grey-mantled senescens of the Peking region, which 

 passes through an intermediate link into (4) the desert form, found 

 on the western edge of Shan-si and in northern Shen-si where it 

 borders on the Ordos Desert. 



10. EUTAMIAS ASIATICUS OEDINALIS. 



Thos. Abstr. P. Z. S. 1908, p. 44 (Dec. 15). 



J. 1798, 1799, 1803, 1830, 1867, 1872. 5. 1804, 1874. 

 Yu-lin-fu, Shan-si. 4000'. 



c?. 1888,1941. $. 1887. Mts. 12 miles N.W. of Ko-lan- 

 chow, Shan-si, 7000'. 



A pallid, semi-desert race allied to E. a. senescens. 



Colour mxuch paler throughout than in senescens. Crown paler 

 and more approaching pinkish buff; shoulders and nape with 

 almost no grey in them, scarcely more grey-grizzled than the 



