Descriptions of East Asiatic Mammals 249 
chestnut-tipped slate-based hairs, paler on the membranes, the 
underparts pure white except those of the belly and insides of 
the hind legs, which have dark bases. The tail, light brownish 
gray, is distinctly distichous as in sagitta. The length of the 
head and body is 5% inches, tail 4 inches, foot 1 inch. 
Hylo petes s. spadiceus has the upper surface reddish brown, 
with the bases of the hairs gray, and the membranes, limbs, and 
tail dusky. The basal fourth of the tail beneath is reddish. The 
underparts are dull white. The length of the head and body is 
5 inches, tail 4% inches, foot 1 inch. This form, native to 
Arakan, has been recorded from Annam and Laos. 
Hylopetes phayrei, the slightly larger species from near Ran- 
goon, also reddish gray, has the tail rather more slender. The 
length of the head and body is from 6 to 6% inches, tail 5% 
inches, hind foot 1% inches. The races of H. phayrei are H. p. 
probus from Mt. Popa, Burma, and H. p. laotum from the 
mountains of Laos and Siam. The former has the feet wholly 
>vhite; the latter is larger, the length of its hind foot 1% 
inches. 
Hylopetes alboniger is dark gray, with the hair bases almost 
black. The outer edge of the membrane is black, narrowly edged 
with white for 1 inch behind the wrist. The hands and feet are 
dark gray, the hind toes white. The tail, only slightly flattened 
on top, is smoky gray with the tips of the hairs black. The 
underparts are white, touched with drab on the belly; the hairs 
of the chin and throat are white to the roots. This Squirrel, first 
found in Nepal, is recorded by Osgood from Tonkin, Laos, and 
Annam. The race H. a. orinus from Yunnan is slightly larger. 
The length of its head and body is 8 inches, tail 7% inches, 
hind foot ± 1% inches. It apparently inhabits the mixed forests 
of the temperate zone at about 11,000 feet above sea-level. 
A smaller related species with longer ears, H. leonardi, from 
Kachin Province, northern Burma, has blackish hands and feet, 
"pinkish buff" underparts, and a strong external resemblance 
