592 Mr. H. C. Robinson on new 



hioher portions of Pulau Pemangsji], this porcupine is more 

 closely allied to tlie form from Tioman than it is to that of 

 Aor, though in the case of tlie other species inhabiting 

 Pemanggill their affinities are ratlier with those of the latter 

 island. 



Sciurus vittat us famulus, subsp. n. 



Type. — Adult male (skin and skull), No. 153/12, 

 Selangor Museum, collected on Pulau Dayang, near Pulau 

 Aor, johore Archipelago, South China Sea, June 16tli, 1912, 

 by H. 0. Robinson and E. Seimund. Original no. 4938. 



Characters. — A dwarfed form of the vittatus group, closely 

 approximating in size to its geographical neighbour Sc. v. 

 aoris, Miller, but in colour intermediate between that form 

 and Sc. V. ijeninsularts from the mainland of Johore and 

 Singapore Islai'd. Skull : greatest length (mean of ten 

 specimens) 44'7, zygomatic breadth 26*0, against 49*4 and 

 28'0 in the type of Sc. v. peninsular is. 



Colour. — Upper parts a tine grizzle of black and bufFy 

 olivaceous, less greyish than in Sc. v. aoris and less rufescent 

 than in Sc. V. j^eninsiilaris. Feet and hands grizzled black 

 and golden buff, tlie latter in excess. Cheeks grizzled 

 greyish buff; a buff eye-ring. Buffy-white side-stripe 

 broader and not quite so clearly defined as in Sc. v. petiin- 

 sularis, but the black stripe shorter and narrower and not so 

 dark, but still sharply defined and not largely obscured by 

 grizzling as in many specimens of Sc. v. aoris. Tail lik«5 

 back, but annulations more pronounced and with the terminal 

 portion strongly washed with ochraceous rufous, a tint 

 entirely absent in Sc. v. aoris. Under surface ochraceous 

 rufous, rather less ochraceous than in Sc. v. peninsularis, 

 but not nearly so buffy as in Sc. v. aoris. Throat, upper 

 chest, and under surface of fore limbs golden buff. 



Measurements. — Collectors'' external measurements (taken 

 in the flesh) : — 



Head and body 176 (199*) mm. ; tail 158 (198) ; hind 

 foot 40 (47-5); ear 16-5 (16). 



Cranial measurements: greatest length 45*1 (51"2) ; 

 condylo-basilar length 38-8 (43*1); interorbital breadth 

 16-2 (18-1) ; zygomatic breadth 2G-0 (29-8) ; cranial breadth 

 20-8 (23-2) ; median length of nasals 13*1 (15-4); diastema 

 10*3 (ll'l) ; upper molar series, including jom^, 8*3 (9"6). 

 Specimens e.xamined. — Ten, all from the type locality. 



* Measurements in parentheses those of an adult male Sciurus v. 

 peninsularis from Changi, Singapore Island, Selangor Museum, No. 

 1743/08. 



