400 Ur. 0. Tliomas on 



•itMius — arc most welcome, especially a*i they are killed at a 

 different season to the previous specimens, and thus help 

 towards a knowledge of its seasonal variation. 



20. Tamiojys maritimiis forresti^ Thos. 



S . 132, 535, 623 ; 9 . 131, 53G, 624. Li-kiang Range, 

 27° 30'. 10,000-11,000'. 



Three of these specimens were killed in December, and 

 fully bear out the sugj^estion made on the descri|)tion of the 

 subspecies that it would probably be without dark subdorsal 

 stripes in the winter. We are therefore now able to trace 

 the seasonal changes of Forrest's lamiops at the principal 

 seasons. 



21. Dremomys pernyi pernyi\ M.-Edw. 



c? . 32, 83, 224 ; ? . 34. Mekong-Salween divide at 28°. 

 7000-10,000'. 



These specimens of the typical pernyi, agreeing as they do 

 with those sent by the Paris Museum as representing that 

 animal, the form fixed on as being true pernyi in my paper of 

 1D16*, are of great value, as we had hitherto scarcely any 

 examples belonging without question to it. 



In determining them and the succeeding specimens of 

 Dremomys I have been able to re-examine all our western 

 examples o^ pernyi — from Burma, Yunnan, and Sze-chwan, — 

 and find that they may be divided into seven races, as 

 follows : — 



A. Dark-coloured, saturate, the end of the tail more 



or less blackened. 

 a. No trace of a darker median dorsal lipe. (E. 



of Salween.) pernyi, M.-Edw. 



h. A slight but constant indication of a dark line 

 on the fore-back. (W. of Salween.) 

 a^. Size medium — skull less thau 55 mm. 

 a'. Skull about 53 mm. : tooth-row 8"1. 



(Tengyueh.) . hoioelli, subsp. n. 



h^. Rather smaller — skull 50 mm. ; tooth- 



ruw 7'7. (Chin Hills.) tnentosus, subsp. n. 



b"^. Size larger — skull 57 mm. (Mt. ImawBum.) mM«, subsp. n. 



B. Light-coloured, grey or pale olivaceous. End of 



tail not blackened, 

 c. Size larger, skull over 50 mm. ; colour greyer, 



(Upper Mekong and Sze-chwan.) griselda, Thos, 



* Ann, & Mag. Nat. Hist. (8) xvii. p. 391. 



