282 EODENTIA. 



Arracan and anotlier adult from Tenasserim. The latter is unusually rufescent, 

 and in its intermediate characters serves to connect the still more rufescent P. oral 

 with P. cineraceus. 



* Pteromys yunnanensis, n. s. Plate XXII. 



This is a large-headed flying squuTcl belonging to the P. oral group, and appa- 

 rently attains to larger size than any of its fellows. 



It is a most richly coloured animal with fine, glossy, silky fur, the hair on the 

 long black bushy tail being quite as fine in texture as the dehcate covering of the 

 body. 



The general colour is a rich dark maroon- chestnut on all the upper parts, the 

 head and back, in some, being finely speckled with white, which is most marked in 

 the young, but is always most profuse on the posterior half of the back, which in 

 some individuals has almost a hoary tinge from the extent to which the white 

 annulation of the hairs is carried. In the adult, the upper surface of the parachute 

 is of the same colour as the back, and the hairs are not annulated, except along its 

 margin, but in younger specimens they are partially so on the upper surface, as are 

 also the hairs on the first three or six inches of the tail, which are concolorous with 

 the back, but broadly tipped with black, while the remaining portion of the tail is rich 

 glossy black. The sides of 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 fine, and to a darker tint of 

 the same colour at the margin of the parachute. 



The basal portion of the fur of the upper parts is a 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 bemg 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. 



As I succeeded in procuring only skins of this splendid squirrel, I cannot give 

 any accurate dimensions, but the largest measures, from muzzle to root of tail, 24 

 inches ; the length of the tail being the same. 



The specimens were all obtained at Teng-yue-chow, but it is said to inhabit the 

 forests of the Kananzan mountains to the east. 



