Journal of the Federated Malay States museums - Sabrizain.org

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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. Robinson
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 ferruginous
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 noticeably
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); diastema,
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).
.