brown extending along the dorsum of the tail for about three
inches.

"Muller and Schlegel mention a variety that I have not seen, and of
which they state that the red colour of the under parts extends to
the heel, the forefoot and the toes, while the colour of the upper
parts passes into a uniform lustrous black. They also remark, however,
that the back not unfrequently assumes a pale yellowish brown tint"
('Anat. and Zool. Res.' p. 242).

Horsfield remarks:--"This species is nearly allied to the _S.
erythraeus_ of Pallas, but it varies in the depth of the colours both
above and underneath."

"In the skull the orbit is rather large, and the muzzle is so
contracted at its base that the extremity is but little
narrower."--_Anderson_.

NO. 287. SCIURUS SLADENI.
_Sladen's Squirrel_.

HABITAT.--Upper Burmah.

DESCRIPTION.--After Dr. Anderson ('Proc. Zool. Soc.' 1871, p. 139)
who first obtained and named this species: "grizzled, rufous olive
above, the annulations fine, and the fur of moderate length; the
forehead, face, chin, throat, belly, inside of limbs, front of thighs,
lower half of fore-limbs, and the hind-feet rich chestnut red; tail
rather bushy, as long as the body without the neck and head,
concolorous with the upper surface of the body, but slightly more
rufous; with a bright chestnut red tip."

SIZE.--Head and body, 10-1/4 inches; tail, including rufous tip, 8
inches.

This handsome squirrel is figured in the volume of plates belonging
to Dr. Anderson's work on the Zoology of the Yunnan Expedition.
Speaking of the skull he says: "The skull of _S. Sladeni_ has a rather
short muzzle, with considerable breadth across its base superiorly,
and it is a shorter and broader skull than the skulls of squirrels
referred to _S. Blanfordii_. Compared with the skull of the
red-headed specimen of _S. erythraeus_ from Bhutan, there is a
decided resemblance between the two, the chief distinction being the
less breadth of the base of the muzzle of the latter, but the teeth
of this specimen show it to be young, while the teeth of _S. Sladeni_
are much worn by use."--'A. and Z. Res.' p. 243.

NO. 288. SCIURUS FERRUGINEUS.
_The Rusty-coloured Squirrel_.

HABITAT.--From Assam to Burmah and Siam, and the adjacent islands
of Pulo Condor and Sichang.

DESCRIPTION.--Colouring most diverse, no less than ten named species
being referable to this one, viz., _S. Finlaysoni_, _S. ferrugineus_,
_S. Keraudrenii_, _S. splen