of the Sciurus erythreus Group. 161 
Before describing each race separately, it will perhaps be 
advisable to consider the chief specific differences :—VSe. 
erythreus, from Jndia, is distinguished from all the other 
species by the absence of the fulvous tips to the hairs of the 
tail. Occasionally, in some of the other species, these tips, 
being very much worn, may not be conspicuous, but, as a 
rule, the Indian forms can by that character be immediately 
recognized. Sciurus melanogaster, with its black underparts, 
and Se, Styan?, with pale yellow underparts, are both easily 
distinguishable, while Sc. castaneoventris may be known by 
its smaller size and the vinous tint of the underparts. Sc. 
thaiwanensts, from Formosa, may be recognized from Se, ery- 
threeus, the only species which it in any way resembles, by 
the fulvous tips to the hairs of the tail, which are more con- 
spicuous in this species than in any of the others. 
Sciurus erythreus typicus, Pall. 
Scturus erythreus, Pallas, Glires, p. 377 (1778); Gray, List Mamm. 
B. M. p. 142 (1843); Blyth, J. A.S. B. xxiv. p. 473, 
General colour above dark olive-brown, speckled with 
fulvous, each hair being dark at its base and having three or 
four fulvous annulations. Colour of underparts deep chest- 
nut. Outside of limbs and head like the back, ears and tail 
like the underparts. The hairs of the tail are annulated like 
those of the back, but end in a long red tip, which, especially 
towards the end, entirely covers the annulations. 
Hab, Assam. 
There has been sone doubt regarding which particular race 
Pallas’s name should be applied to; but as he distinctly states 
that the tail is of the same colour as the underparts, there 
can, | think, be little doubt that the Assam variety with the 
red tail is the one meant. 
Sciurus erythreus bhutanensis, subsp. n, 
Macroxus erythrogaster, Blyth, Gray, Ann. & Mag. Nat, Hist. xx, 
(1867) p. 282. 
Sciurus erythreus, Blyth, J. A. S. B. xxiv. (1856) p. 473. 
Closely resembles the foregoing, but the whole of the 
forehead is similar in colour to the underparts, while the hairs 
of the tail have short black ends, so that the tail is similar in 
colour to the back, with a black tip. 
Hab. Bhutan, 
Type, B.M. 43. 8.18. 6. Hast India collection. 
Gray (loc. cit.), in stating that Blyth’s type of erythro- 
gaster is from Bhutan and in the British Museum, refers 
