EVOTOMYS 249 



subspecies; hiiul-foot 17-1'J mm.; con(lyl()-ba,sal length of skull 

 in adults with rooted molars 25-3 — 27-6 mm. Tail rather short, 

 usually about one-third of the length of the head and body. 

 Mantle sharply defined and bright rufous in adults. 



Fur soft and dense, rather long, attaining a length of 12- 

 14 mm. on the back. Mantle bright rufous in adults, narrow, 

 sharply defined, usually conspicuously contrasted with surround- 

 ing grey parts, and extending from the interorbital region back- 

 wards, between the inner bases of the ears, to the rump. Muzzle, 

 cheeks, flanks, and rump grey, darkened by the slaty bases of the 

 hairs. Ears concolorous wath the flanks, but the hairs of the 

 pre-auricular and post-auricular patches with yellowish or 

 pallid tips. Hands and feet whitish grey above; soles rather 

 densely haired from the heel to the central pads. Tail rather 

 thinly clad with long stiii hairs, forming a thin terminal pencil 

 of about 10 mm. in length, but not completely concealing the 

 annulations ; bicoloured, blackish above, dirty white below. 



The colour of the upper parts and the degree to which the 

 rufous mantle contrasts with the surrounding grey tones vary 

 considerably with individual age and with season, the tones being 

 duller and darker in the younger, brighter in the adults, darker 

 in summer and paler in winter. According to CoUett there is 

 also a sexual diflerence, females being often duller than the males. 

 In adults the mantle varies between " hazel " and " cinnamon 

 rufous," and is lightly lined by long black hairs, and dusky hair- 

 tips ; but in the young and adolescent it is darker, approaching 

 a deep reddish-chestnut. The surrounding grey parts are more 

 pallid and more sharply contrasted with the mantle in adults ; 

 deeper, richer, and less contrasted in young and adolescent 

 individuals. 



Skull slightly smaller ^ than in other subspecies, its condylo- 

 basal length not or rarely exceeding 27-5 mm., the cement spaces 

 of the molars closing when the condylo-basal length reaches about 

 24-5 mm. Braincase relatively short, nearly square in outline. 

 Post-orbital crests of squamosals short, forming prominent jDeg- 

 like processes in adults. Palate narrow. Auditory bullae rather 

 small. 



Cheek-teeth of normal pattern in adults. In young stages of 

 wear, >m^ rather simpler than in some Far-Eastern forms, the 

 fourth outer and fourth inner salient angles usually represented 

 only by ephemeral vestiges. 



For external and cranial measurements, see tables at end of 

 volume. 



Remarks.- — The material before me comprises a small but 



more; length of skull 28-29-5 mm. It is probable, therefore, that there is 

 no real difference in size between E. r. rufocanu.s and the large forms of 

 Korea and Japan. 



^ As already noted, considerably larger specimens (with a total length 

 of 29-5 mm.) are recorded by Collett. 



V.L. S 



