69^ MR. OLDFIELi) THOMAS ON 



25. MiCROTUS (OARYOMYs) EVA Thos. 



(^.2173. Tai-pei-san, Tsin-liiig Mts., S.W. Shen-si. 10,600'. 

 The typical series was obtained near Taii-chow, Kan-su, ^t a 

 similar elevation. 



26. Lepus svvinhoei Thos. 



(S . 2145. 30 miles S. of Feng-hsiang-fn, S. Shen-si. 3600'. 



Represents L. filchneri Matsch., and also the Tai-pei-san 

 subspecies " suppressed " by Dr. Allen*, to which he, nevertheless, 

 attaches the name L. swinhoei brevinastts. 



Of all the many examples of L. swinhoei obtained by 

 Mr. Anderson, whether topotypes from Shantung or from other 

 localities, this specimen is one of those that agree most closely 

 with the type collected by Swinhoe, owing to its being a dark- 

 coloured individual, with its general buffy coloration more or less 

 suffused with pinkish. 



27. OCHOTONA SYRINX. 



Thos. Abstr. P.Z.S. 1911, p. 27 (May 2). 



c?. 2170. $. 2171. Tai-pei-san. 10,600'. 



(?) S . 2071 (young). Shang-chou Dist., S.E. Shen-si. 3300'. 



Related to 0. cansa, but larger. Bvillse smaller. 



Size distinctly larger than in 0. cansa and 0. sorella. Fur (in 

 winter pelage) long and soft, not veiy thick ; hairs of back about 

 16-17 mm. in length. General colour more blue-grey throughout 

 than in cansa ; head grey tinged with clay-colour ; nape " smoke- 

 grey " ; dorsal area darker grey tinged with brown ; rump nearly 

 "mouse-grey." Flanks near "broccoli-brown." Under surface 

 greyish, the bases of the hairs slaty, their tips greyish white. 

 Ears greyish brown, their proectote blackish, their rims white ; 

 the tuft of long hairs at their inner base nearly " cinnamon." 

 Hands and feet white above, the thickly haired palms and soles 

 " smoke-grey." 



Skull of the same general type as in 0. cansa, of similar flat- 

 tened form, the palatal foramina not subdivided. Size distinctly 

 greater throughout ; nasals of about the same shape, not narrowed 

 as in 0. sorella. Interoi-bital space and brain-case broader. 

 Bullae conspicuously smaller or at least lower, those of 0. cansa 

 being very large for so small a species. 



Dimensions of the type, measured in the flesh : — 



Head and body 142 mm. ; hind foot 28*5 ; ear 16. 



Skull : greatest length 36*5 mm. ; condylo-incisive length 33"5 ; 

 zygomatic breadth 18*5; nasals ll'8x5'4; interorbital breadth 

 4"3 ; breadth of brain-case 15"7 ; palatilar length 12 ; pala.tal 

 foramina 9*2 X 3"7 ; upper cheek-tooth series (alveoli) 7*1. 



JIab. Tai-pei-san. 



* Bull. An\. Mus. N. H. xxvi. p. 427, 1909. 



