new Mammals: from the Malay Peninsula. 227 



Cranial measurements : greatest lengtli 56-1 ; condylo- 

 basilar length 48'2 ; interorbital breadth 19"9 ; zygomatic 

 breadth 3.2"8 ; cranial breadth 252 ; median length of nas;i1s 

 18' 1 ; diastema 126 ; upper luolar series, including pnr', 

 111. 



Specimens e.ramined. — Forty, all from the type-locality. 



Remarks. — Amongst tlie series ol)taiued are a large pro- 

 portion whicli differ from the specimen described above iu 

 having the rufous hazel of the shoulders and flanks invading 

 tlie dorsal area and coalescing on the nape. It is possible 

 that this iudicates that the form possesses two seasonal 

 pelages, as is apparently the case in Sc. caniceps, but is 

 almost certainly not so in Sc. concolor and allied races. 

 Since the whole series before us was obtained within a 

 period of one month it is at present impossible to make any 

 definite pronouncement on the point. 



Ratufa melanopepla decolorata, subsp. n. 



Type.—PL^wlt female (skin and skull), No. 251/13. 

 Federated Malay States Museum, collected on Koh Sauiui, 

 N.E. Malay Peninsula, 15th May, 1913, by H.C.Robinson 

 and E. Seimund. Original no. 5356. 



Characters. — Nearer in colour to R. m. melanopepla from 

 the mainland than to the other island races, but very much 

 smaller. Skull more slenderly built. 



Colour. — Apparently as in R. melanopepla melanopepla. 



Skull and teeth. — Interpterygoid space relatively wider 

 than iu the typical form and zygomatic much lighter. 



Measurements. — Collectors' external measurements (taken 

 in the flesh) : — 



Head and body 328 (342 *) ; tail 417 (455) ; hind foot 

 68 (75). 



Cranial measurements : greatest length 68*7 ('72'8) ; con- 

 dylo-basilar length 57*1 (61'2) ; interorbital breadth 20"2 

 (29*3) ; zygomatic breadth 42"6 (458) ; greatest length of 

 nasals 23'0 (24*8) ; diastema 14*1 (16'0) ; upper molar series 

 13 4 (141). 



Specimens examined. — Thirteen, twelve from the tyi)e- 

 lorality and one fr(>ni Koh Pcniian. 



Remarks. — With one exception all the specim'ens are in 

 hifihly bleached pelage, though some are assuming the new 

 coat on the anterior half of the body. It is therefore dith- 

 cult to state whether any colour-dilferences exist between 

 this form and that of the niainhuid. 



♦ !\rpa«v]rements in p.aron theses are those of nn adult female from 

 Kfio Nawn^r, 1100 ft., on tlie adjacent mainland; Federated Malay States 

 Museum, No. 2r>0/13. 



