PTEROMYS. 297 
the face, below the eye and ear, are yellowish-grey, mixed with chestnut, 
and the chin is dusky ; the paws are rich black, also the margins of the 
limbs ; the under surface is clad with a yellowish-white, rather woolly 
fur, which in some tends to a chestnut tint in the middle line, and toa 
darker tint of the same colour at the margin of the parachute. 
“The basal portion of the fur of the upper parts isa dark greyish- 
brown, the hairs at their base being wavy ; then follows a palish chestnut 
band, succeeded by a dark maroon chestnut, which either may or may 
not have a pure white sub-apical band, the tips of the hairs being glossy 
deep maroon chestnut, in some verging on black.) 
“The ears are large and rounded, and very sparsely covered with 
black hairs externally, with chestnut-coloured hairs on the anterior, and 
black on the posterior half of the dorsal surface. 
“The hairs on the outer side of the tarsus form a rather long 
and dense brush; the tail is moderately bushy.”—‘ Anat. and Zool. 
ees-; p. 282. 
SizE.—Dr. Anderson only got skins of this beautiful squirrel, so 
accurate dimensions cannot be given, but the largest skin measured from 
muzzle to root of tail 24 inches, the tail being the same. 
No. 300. PTEROMYS MELANOPTERUS. 
The Blackflanked Flying Squirrel. 
Hapitat.—Thibet. 
DescripTION.—The back and top of the head are greyish-yellowish, 
the hairs being leaden grey at the base, passing into yellow, the sub- 
terminal part being brown, with a minute dark point ; the upper surface 
of the parachute is almost wholly black, with a greyish-white border ; 
under surface yellow ; the belly greyish-ashy; feet black ; limbs and 
tail concolorous with the body, the latter very bushy. 
SizE.—Head and body, about 19} inches; tail, 174 inches. 
I have included this species, although it does not belong to India 
proper ; still it would be well if travellers and sportsmen exploring our 
Thibetan frontiers would keep a look-out for this animal. At present all 
we know of it is from Professor Milne-Edwards’s description of animals 
collected by the Abbé David, to whom we are also indebted for the 
* next species. 
No. 301. PTEROMYS ALBORUFUS. 
The Red and White Flying Squirrel, 
Hasirat.—Thibet ; district of Moupin. 
DESCRIPTION.—I have but a bare note of this species taken long ago 
from Milne-Edwards’s work on the Mammals of Thibet, so I will quote 
