52 FUri BEAIMNG MAMMALS. 



the Arctic fox (Canis lagopns), from which the valuable white skius are 

 obtained. 



As far as I know there is no export trade in mole skins from 

 North China. This is doubtless due to tlie great scarcity of moles 

 Three species belongingi to the genus Scaptochirus are recorded from 

 North China, but these animals are nowhere common. 



Judging from the great number of rodents found in the country, 

 one might reasonably expect to find that at least some of them yielded 

 valuable furs. As a matter of fact the marmot {Marmota robusta) and 

 the grey squirrel (Sciums vulgaris) are the only two rodents in North 

 China, which have valuable pelts, and these only occur in the extreme 

 west, along the frontier of Thibet and Chinese Turkestan, and in Man- 

 churia and Eastern Mongolia. There are a great many varieties of 

 the grey or fur squirrel. They range in colour from red to dark grey. 

 In many districts they are red in summer and grey in winter. The 

 common squirrel of Great Britain belongs to this species. 



Tlie marmot is a very large member of its genus. The Chin-^so 

 name is Ta la, or Han ta (Lit. Land otter), and in East Mongolia 

 Tarabagan. I am told that far fewer marmot skins reach Tientsin 

 now than formerly. It was this animal that was credited with spread- 

 ing the pneumonic plague, through the agency of its fleas, as is the 

 case with the common rat in Bombay and elsewhere. This may 

 account for the falling off in the numbers of skins on the nrarket. 



