Oil I'tro new Sciuroptcri /Vy/zj IJornfo. 275 



XXX\'l. — Descriptions of Two ncio Sciui'opteri fliscnvrrfitl by 

 Mr. C/mrh's Hose {u Borneo. By Oi.i)Fii:rj> Tlio.MAS. 



Sciuropterus Thomsoni, sp. ii. 



Similar in size aiul essential characters to S. Ilorsjleldi, 

 l)iifc with the "general colour of the head and upper surface 

 dark smoky brown, tinely ij;rizzled with dull hutl'y white, this 

 latter colour re[)lacin^: the bright fulvous or rufous fouml in 

 the allied species. Underside whitish or |)ale fulvous. E;irs, 

 hands, feet, and tail as in S. llorsfieldi\ or, at least, as in 

 *' 6\ Davi'sonr^ *, for the type of ^. Ilorsfieldi is so faded 

 that the colours cannot be determined with certainty. 

 Mannn;i3 6. 



Skull and dentition as in the allied species. No upper 

 /'.' present. 



Dimensions of the type (measured in the flesh by Mr. 

 Hose) :— 



Head and body 231 niillim. ; tail 190 ; hind foot 37, with 

 claws 40'5 ; ear '1'2. 



Skull : greatest length 40-') ; basilar length 37 ; greatest 

 breadth 29*6 ; nasals 13 x 7'2 ; length of upper molar 

 series 9"2. 



Ilah. Baram District, Eastern Sarawak. Type from the 

 l^akong River. 



Type. Female. B.M. no. 99. 12. 9. 34. Collected August, 

 1897, and presented by Charles Hose, Esq. Three specimens 

 examined. 



^y the request of Mr. Hose I have named this very hand- 

 some flying-squirrel, which is distinguished from its only near 

 ally by its very different body-colour, after Mr. Thomson, 

 the energetic Managing Director of the Borneo Company. 



Sciuropterus Ifoset, sp. n. 



Size small, about as in ^S". seiosus. Fur as usual very soft 

 and fine. General colour above dark, the tij)s of the tlorsal 

 hairs washed with fawn or rufous fawn ; flanks and to[) of 

 parachute from wrists to ankles black, the lighter tips to the 

 liairs disappearing laterally. No special tufts of bristles 

 on cheeks or round ears. Centre of face like back ; a darker 

 line running through eye to base of ear; below this the 

 cheeks are j)ale rufuus white ; behind posterior base of ear a 

 prominent white patch. Ears very long and narrow, nearly 

 twice the length of those of S. setosus. Under surface dull 

 white, with a slight rufous tinge, but how much of this is 

 • Described aud liyincd P. Z. 8. 188(j, p. 74, pi. vi. 



18* 



