1908.] MAMMALS FKOM NORTHERN CHIN'A. 969 



ci-eam-buif cheeks and sides ; rump more or less ochraceoiis-buft", 

 markedly brighter than in senescens, where it is " raw umber " ; 

 dark dorsal stripes lightened in intensity by their hairs being 

 largely tipped with ochi-aceons ; their porportionate lengths as in 

 senescens. 



Dimensions of the type, measured in the flesh : — 



Head and body 139 mm. ; tail 125 ; hind foot 39 ; ear 19*5. 



Skull — greatest length 41 mm. 



Hah. of type. Yu-lin-fu, Shen-si. 4000'. 



Type. Adult female. B.M. No. 9.1.1.36. Original number 

 1804. Collected 1 May, 1908. 



" Live in low bushes, not climbing trees. 



'■ Not until the latter part of April, about the time we reached 

 Yu-lin-fu, did the weather become warm enough to attract the 

 Chipmunks from their holes. They frequent the sides of the 

 loess gullies mostly, and are usually fairly common where found 

 at all. Besides the places where specimens were collected, two 

 were seen at Pao-teh-chow, and, I believe, from the people's 

 accounts, that they occur at Yen-an-fu. Mr. Sowerby states that 

 Chipmunks are common near Tai-Yuen-Fu. 



" A large proportion of Chipmunks, wherever we found them, 

 had their tails broken short." — M. P. A. 



It is only in accoi-d with the usual order of things that the 

 Chipmunks of the country edging the Ordos Desert should reflect 

 their sui-roundings by being markedly paler than their allies near 

 Peking. So great is the difference indeed that an intermediate 

 link in the series might suitably have a special subspecific name, 

 as follows : — 



11. EUTAMIAS ASIATICUS INTERCESSOR. 



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

 ? . 1971, 1972, 1998, 2002. Ning-wu-fu, Shan-si. 6000. 

 d' . 1984, 1987, 1992, 1993. $ . 1982, 1985, 1986, 1989, 1990, 

 1991. 20 miles S.W. of Ning-wu-fu. 6000'. 



Intermediate in intensity of colour between the dark grey- 

 mantled senescens and the pallid ordincdis. Ground-colour of 

 shoulders light greyish, more grizzled than in ordincdis, less than 

 in senescens ; cheeks and sides buffy. Rump darker in tone than 

 in ordinalis, but in this respect nearer that form than senescens, 

 the general colour near clay-colour. Proportions and intensity of 

 dorsal stripes about as in senescens, though the dark ones are 

 rather more numerously grizzled with ochraceous. 



Dimensions of the type, measured in the flesh : — 



Head and body 145 mm. ; tail 133 ; hind foot 30; ear 19. 



Skull — greatest length 42 mm. 



Hah. of type. Ning-wu-fu, Shen-si. 6000'. 



Tij2)e. Adult female. B.M. No.9. 1.1.42. Original number 1972. 

 Collected 14 June, 1908. 



With 7 authentic examples of senescens before me, with 14 of 



