IX. ON A NEW RACE OF CALLOSCIURUS 

 VITTATUS (RAFFLES) FROM SINGAPORE ISLAND. 



By II. C. Robinson, C.M.Z.S. 



< Al LOSCIURUS VITTATUS SINGAPURENSJ 



Type: — Adult female (skin and skull), Federated Malay 

 States Museum-;, No. 1747/08, collected at Changi, north-east 

 corner of Singapore Island, on July 27th. 1908, by II. C. Robin- 

 son and E. Seimund. 



Characters : — Very closely relat isularis, 



Miller' from the north hank of the Endau River, Eastern 

 Pahang, but differing from the race in having the light element 

 in the speckling of the upper surface, more ocraceous ferrugin- 

 ous and less olivaceous, the undersurface more ferruginous, less 

 tawny. From Sciurus vittatus subluteus,f Thos. and Wrought., 

 from South East Johore : it is at once separated by its notice- 

 ably brighter colouration on the belly and darker tad and from 

 Sc. v. nesiotes,X Tbos. and Wrought., by its broader and more 

 clearly defined lateral black stripe. The absence of a clear 

 red pencil to the tail beneath at once distinguishes from Sc. v. 

 miniatus,\ Miller, of the Peninsula mainland from Trang to 

 North Johore. 



Measurements: — External measurements of the type taken 

 .n the flesh: head and body, 207: tail. 186; hindfoot. 47: 

 ear. 17 mm. 



Average and extremes of eight specimens: head and body. 

 203.5 (I 93--09/i: tail 193.8 1178-224': hindfoot. 46.1 (43-47^: 

 ear. 15.9 (I5.5-I7mm.). 



Cranial measurements of type. Greatest length, 51.9: 

 condylo-basilar length. 44.1; diastema, 11. 1; zygomatic breadth, 

 31. 1: median length of nasals' 15.6; maxillary tooth row, 

 including pm 3 10.2mm. 



Average and extremes of eight specimens: greatest length, 

 50.6 (49.2-51.9); condylo-basilar length. 4 3.0 (41.8-44.1); dias- 

 tema, n. 4 110. 8-12.0): maxillary tooth row including pm 3 10.0 

 (9.9-10.2). 



Specimens examined: — Eight, all from the type locality . 



Remarks: — Recent workers have included this form in 

 Sc. vittatus peninsularis (Miller) which as now restricted is 

 confined to a comparatively small area in Southern Pahang 

 and Eastern Johore. 



• Smithsonian Misc. Coil. vol. 45. p. 11 (1903). 

 tjotirn. Fed- Malay. State- Mus. iv. p. 116 (1909). 

 ; Journ. led. Malay States Mus. iv. p. 115 (1909) 

 § Proc. Acad. Sci. Washington, ii. p 79 (1900). 



