Dr. J. Anderson on new Asiatic Mammals. 283 



on the posterior half of the back. In the adult the upper 

 surface of the parachute is of the same colour as the back, 

 and the hairs are uniformly coloured ; but in younger indi- 

 viduals some of the hairs have white rings. The sides of the 

 nice below the eye and ear are yellowish grey mixed with 

 chestnut, and the chin is dusky. The paws and the margins 

 of the limbs are rich black. The base of the tail in young 

 individuals is more or less concolorous with the back and 

 grizzled ; but in adults the grizzling is absent, but the first 

 six or seven inches are chestnut, the hairs being broadly tipped 

 with black, and passing gradually into that colour, which 

 characterizes the rest of the tail. The under parts of the 

 animal are yellowish white, tending in some to a chestnut line 

 along the middle of the chest and belly, and to a darker tint 

 of the same colour on the margin of the parachute. The 

 basal portion of the fur of the upper parts is dark greyish 

 brown, followed by a palish chestnut band, succeeded by dark 

 maroon-chestnut, which may either have or not have a white 

 subapical band, the tip being glossy deep maroon-chestnut, 

 in some verging on black. The fur of the upper parts and 

 tail is long, soft, and silky, while that of the under surface is 

 more woolly in texture. The ears are large and rounded, and 

 clad with very short hairs. Cheek -bristles present. 



Length of body 24 inches, the tail being the same. 



Hob. Neighbourhood of Zeugyechen, Yunan. 



Arctomys dichrous, n. sp. 



This marmot, four specimens of which have been procured 

 from the mountainous country to the north of Kabul, differs 

 from every known marmot in the marked contrast between 

 the colour of the upper and under parts of the animal, and in 

 the harsh texture of its fur. 



It has the general form and structural characters of its 

 fellows ; but the upper surface is pale rusty yellow, while the 

 sides of the face are dark brown, tinged with the former 

 colour. The chin, throat, chest, and the lower third of the 

 sides, the inferior two thirds of the fore limb, the upper surface 

 of the hind feet, the belly, and inner side of the limbs are all a 

 dark rich brown. The tail is almost concolorous with the 

 belly ; but it is here and there tinged with rich rufous brown, 

 the tip paling to nearly yellowish brown. 



Length of body from snout to root of tail 17 inches ; length 

 of tail 6^ inches. 



A full description and figure of this animal will appear in 

 the ' Proceedings ' of the Zoological Society of London. 



