44< CLASS MAMMALIA. 



The Corsac, or Small Yellow Fox, (Cams Corsac, Gm.) Buff. 

 Supp. III. xvi., under the name Adive. 



Of a pale yellowish gray, some blackish waves 

 on the base of the tail. The end of the tail black, 

 and the jaw white. Common in the vast heaths 

 of Central Asia, from the Volga to the East 

 Indies ; possesses the habits of the common 

 fox, and never drinks. 



The Tri-coloured Fox of America, (Canis Cinereo-argenteus.) 

 Schreb. XCIL A. 



Ash-coloured above, white beneath, a band of 

 cinnamon red along the flanks. Habitat, all 

 the hot and temperate climates of the two Ame- 

 ricas. 



The Silvery or Black Fox *. 



Black, but the ends of the hairs are white, ex- 

 cept on the ears, shoulders, and tail, where they 

 are purely black. The tip of the tail is altoge- 

 ther white. From North America. Its fur is 

 one of the finest and most highly prized. 



The Blue Fox, or Isatis, (Canis Lagopus), Schreb. XCIII. 



Deep ashen colour ; the under part of the toes 

 furnished with hairs. It is often white in win- 

 ter. From the north of Siberia. Likewise 

 very much esteemed for the fur. 



* Gmelin has confounded this with the black wolf, under the 

 name of Canis Lycaon. 



