of the Sciiiru3 Prcvostii Group. 171 



tliiglis havo ii gioyisli grizzleil apucaraiico ; tlie sliouldcrr*, 

 silica of the neck, ami clicck.s arc also griziilcil, altlioui^li in 

 Boinc cases tlicy aro suiruscil witli nil'oiH. Tail witli hroa'l 

 fulvous tips to all the hairs except those t'oruiing the oiul. 



I)iinciisi(»!is as in Sc. Prevostii ty picas. 



Hub. Kuchiii^-, Sarawak. 



Type $ , B.M. 99. 12. 9. 47. Collected lath Sept., 189G, 

 by Air. Charles Hose. 



Sciurus Prevostii navigator , subsp. n. 



Specimens from the island of Sirhassen form a very distinct 

 race. They are much smaller in size, the chestnut of the 

 underparts is far brighter and more orange in tint. Tho 

 lateral line, which starts from the shoulders, is narrow, cl .'ar, 

 and well marked, and spreads out over the thighs as in 

 6c. P. sarawakensis. The shoulders are of a liglit fulvous, 

 which becomes darker and grizzled on the cheeks and sidesof 

 the head. The tail is pure black, and its hairs show no 

 signs of fulvous tips. 



Dimensions (from skin) : — Head and body 235 niillim., tail 

 225, hind foot 47. 



Ilali. Sirhassen Island. 



Tijpe, B.M. 94. 9. 'IS. 14. Collected Sept. 22, 1893, by 

 Mr. A. Everett. 



Sciurus Prevostii hangkanus, Schlegel. 

 Sciurus Prevostii hangkanus, Schlegel, op. cit. p. 26, pi. i. fig. 2. 



Most nearly resembles Sc. P. Ilumei from Klang, but 

 may be distinguished by the cheeks and sides of the nock 

 being iron-grey instead of white. 



Dimensions as in Sc. P. typicus. 



I lab. Island of liangka. 



Sciurus Prevostii borneoens is '^ (Miillor & Schlegel). 



Sciurus Prevostii, vnr bonieoe7isis, Miill. i>t Sell., Verhaud. over de Nat. 



Cteach. Overz. liezitt., Zool. p. 8t5 ns;3y~44). 

 Sciunis Prevostii homeoensis, Schlegel, op. cit. p. 2(?, pi. i. tig. 3. 



This form, as one might expect, is most closely allied to 

 Sc. P. kuchiiigensis from Kuching, which is, in fact, not 

 very far north of Poiitianak. It is distinguished bv the fact 

 that the black of the back is not sharply defined from the lateral 



• This name antedates that p-iven by Gray to a Bornean form of 6". hiji- 

 purus (Ann. .S: Mng. Nat. Hist. xx. 1867, p. 283). For that I would 

 suggest the name of S. hip/mrus Grayi. 



