A REVISION OF ORIENTAL SCIURIDJE. 247 



Dimensions of the type (measured in the skin) : — 



Head and body 230 mm. ; tail 190 ; hind foot (wet) 45; ear (wet) 

 17. 



Skull : fronto-parietal suture to nasal tip 35 - 3 ; zygomatic breadth 

 30; nasals 15x6 9; interorbital breadth 17; intertemporal breadth 

 17 ; palatilar length 21 ; combined length of p 4 and m 1 " ? 8 , 5.. 



Hab. — Beni-chang, Abor-Miri Hills, northern frontier of Upper 

 Assam. Alt. 4,000'. 



Type.— Adult male. B.M. no. 7. 11. 26. 2. Collected 19th Feb- 

 ruary, 1906, by Mr. H. Stevens. 



This squirrel seems alone to resemble the non-black-backed ex- 

 amples of S. atrodorsalis, but that species is found in a very different 

 area, far to the south of the present locality, and is distinguishable by 

 its differently coloured belly. I have named the new form after its 

 collector, Mr. Stevens, who is one of the very few people who have 

 obtained any zoological specimens in the inaccessible and dangerous 

 region to the north of Assam. 



Sciurus pryeri inquinatus, subsp. n. 



Similar to true pryeri in all important respects except that the 

 under surface and inner sides of the limbs, instead of white, are uni- 

 formly pale rufous (rather darker than " vinaceous-cinnamon " of 

 Bidgway). The dorsal colour is rather more vivid than in pryeri, 

 owing to the reduction of the black rings on the hairs. Lips and 

 chin grey, interramia and throat rather more yellowish than the 

 rufous belly. 



Dimensions of the type (taken on skin) : — 



Head and body 267 mm. ; tail 238 ; hind foot (wet) 58 ; ear (wet) 

 17. 



Skull : interorbital breadth 18 ; palatilar length 25 ; length of 

 upper tooth-series, exclusive of p 3 , 9-6. 



Hab. — Lawas River, western border of British North Borneo. 

 Type. — B.M. no. 1, 8. 25. 1. Collected and presented by the late 

 J. S. Jameson, Esq. 



In spite of the very conspicuous difference involved by the change 

 of the belly-colour from white to rufous, I only make this a sub- 

 species, as one of the Museum examples of pryeri has a slight fulvous 



