392 Mr. 0. Thomas on the 



tail grizzled buffy or brown, varying a good deal, as it does 

 ill all the races, but never clear grey. The buffy colour is 

 clearly shown in Milne-Edvvards's original plate. 



Ravge. Chin Hills, Upper Burma (Mackenzie), Tengyiieh 

 ( = Momein, Western Yunnan {Hoioell), Tse-kow, N.W. 

 Yunnan (Soulie), Western Sze-chwan (Perny). 



2. Dremomys pernyifiavior, G. All. 

 P. Biol. Soc. Wash. xxv. p. 178 (1912;. 



Size small, the smallest of the forms, greatest skull-lengtli 

 about 49 mm., facial length 25. General colour distinctly 

 olivaceous (approaching "deep olive ^'), not so brown as iu 

 other subspecies. 



Hah. S.E. Yunnan, Mong-tze {11. Orii). 



Seven examples belonging to the original series are in the 

 British Museum. The type was one of a few specimens 

 abstracted by a native from the collection and sent to 

 America for sale. 



This is, perhaps, tlie most distinct from the rest of all the 

 subspecies by its smaller size, delicate skull, and more oliva- 

 ceous coloration. 



3. Dremomys jysrnyi griselda, subsp. n. 

 Dremomys peDiyi, G, All. Mem. Mus. Harvard, xl. no. 4, p. 228 (1912) 



Size about as in true pernyi. General colour much greyer 

 than in the other races, back nearly approaching, though 

 darker than, greyish olive of E.idgvvay. Post-auricular 

 patch not very strongly contrasted. Median area of underside 

 of tail liberally mixed with long greyish-white hairs, which 

 nearly or quite hide the buffy bases of the lateral hairs. 



Skull-measurements of type : — 



Greatest length 51*3 mm.; condylo-incisive length 45; 

 facial length 25*5; length of brain-case 26'5 ; upper tooth- 

 series exclusive of p^ ^'2. 



Bah. Eastern part of the mountainous region of Western 

 Sze-chwan, at altitudes of 1)000 to 14,000 feet ; Nagchuka 

 ( = Ko-kou) and Yao-chao [Bailey)-, Ta-chien-lu, Nagchuka, 

 Eamala Pass, and Shuo-low {Zappey). 



Type. Adult female. B.M. no. 11. 10. 3. 3. Original 

 number 6. Collected at Nagchuka, 10,000 feet, 25th May, 

 1911, and presented by Major F. M. Bailey. 



This is the form which, from its occurrence in Sze-chwan, 

 Mr. Glover Allen identified with typical pernyi ; but, as 



