Mammals from the Yunuan n'ujhlawh. 397 



wliitisli mill point of cliin Ijlnckisli. Ears larf^e, thinly 

 liairi'd, almost nal«!»l I'xcopt nlnii^r tlieir aiiferior o<l<^es, black, 

 a lar^e Hinl prominent brij^ht ocliiacoous j):itcli on their 

 posfciior bases ami brhimi tiicm ; this patch some(ime^ 

 duller and mixed witii brown. Upper surface of han<ls and 

 feet, as alsi> the inar;^ins of the parachute, anteriorly and 

 posteriorly bri<:^ht ochraceoua huffy, the actual ed;;e of the. 

 parachute, however, whitish. Tail subcylindrical, mixed 

 buffy and blaek, the hairs black at base, then huffy, with 

 biiiek sul)teitnin;il bands and huffy ends ; tip of tail black. 



Skull without noticeable |)eculiaiities, ratber lon^^er than in 

 timrica \ postorbital j)rocesses well developed; bullte lurf^e 

 and well inflated. 



Dimensions of the type : — 



Head and body 320 mm.; tail 370; bind foot tJ5 ; 

 ear fiO. 



Skull : greatest lerigth 03 ; condylo-incisive lengtli 57 ; 

 zy-omatic breadth 40 ; nasals 18 x 11 ; palatilar length 28'7 ; 

 length of bulla 12 8 ; upper tooth-series exclusive oi' p^ 13'5. 

 Hub. as above. 



Type. Adult female. B.M. no. 22. 9. 1. U. Original 

 number ir>6. Collected 2Gth July, 1921. 



This beautilul grey-beaded Flying-squirrel is so different 

 from every described species that it is difficult to say witJ! 

 which it should be compared. It belongs to a small group of 

 species occurring in the Yunnan-Burma-Siam region, all 

 of which are brightly coloured and of smaller size than the 

 better-known large species of true Petaurista. None of 

 these, however, shows any resemblance to P. clarkei in its 

 buffy colour, grey head, anil ochraceous ear-patches. 



I have great pleasure in naming this very handsome 

 animal after Col. Stephenson Clarke, to whose generosity the 

 National Museum owes the present valuable and extensive 

 accession to its mammal collections. 

 "Shot in pine-forest." — G. F. 



in. Trogoplerus morda.v, Thos. 



? . 228 (immature). Mekong Valh>y, on 28°. 0000". 



Adult examples of Trorfopterus scam difficult to obtain, as .•» 

 considerable proportion of the available specimens of the- 

 genus are immature. 



17. CaUosciurna ert/thrccus michi'anus, Rob. Sc Wr. 



S . 485, r,28 ; ? . 413. Li-kiang Hange, 27'' 30'. 8000- 

 ll.OOO', 



