448 Mr. J. L. Bonhote on 
towards the tip, and in some cases throughout nearly its 
entire length, it becomes of the same rufous colour as the 
underparts. 
The skulls of this species at my disposal are, I regret to 
say, so imperfect that it is impossible to give a very accurate 
description. It is a typical Sccwrus skull of moderate dimen- 
sions and presenting no especially salient features. The 
nasals are of moderate length and taper considerably towards 
their posterior margin, which is in most cases considerably 
anterior to the posterior margin of the premaxille. The 
interorbital region is broad and the postorbital processes well 
developed and turning considerably downwards. The brain- 
case is rather narrow and short. 
Dimensions (from skin):—Head and body 237 millim. ; 
tail 190; hind foot 45. 
Skull: greatest length 52; length of palate from henselion 
23; zygomatic breadth 32 ; interorbital breadth 19°5; length 
of nasals 15; breadth of nasals, ant. 8, post. 5. 
Hab. Sumatra and Malay Peninsula. 
Co-types B.M. 79. 11. 21. 580-1. Bencoolen, Sumatra, 
Received from the Indian Museum, ex coll. Sir 8. Rafiles 
(69 a, 6. Bencoolen, Sumatra. Presented by Lady Raffles). 
In making out the characters of this species I have ex- 
amined the above-mentioned types as well as a large series 
from the Malay Peninsula. Within certain limits it 1s very 
variable, most especially in the colour of its underparts ; 
but nevertheless, when once allowance has been made for 
these variations, it forms an easily recognizable and distinct 
form, the red tip to the tail being a conspicuous and constant 
mark. Iam unable to agree with Mr. G. Miller, Jr., who, 
in a recent paper, has separated the Northern Malay form 
from those found in the south of the peninsula. ‘The point 
of difference seems to be, according to Mr. Miller, in the 
colour of the underparts, which he states to be much deeper 
and darker in the northern form. From the series of 
specimens I have examined, those with the lightest underparts 
are certainly from the south; but I am able to match very 
deep-coloured specimens from Perak with individuals from 
both Johore and Singapore. 
Sciurus vittatus tenutrostris, Miller. 
Sciurus tenuirostris, Miller, Proc. Wash. Acad, Sci. p. 221 (1900). 
This form, which has recently been described by Mr. Miller, 
may be distinguished from the Sumatran form by the absence 
of the red tip to the tail and the skull having the “ rostral 
