66 GAME BIRDS OF INDIA AND ASIA. 



a dark variety. The common grey partridge of 

 Europe {Perdix cinerea), which has certainly not 

 more chestnut in its plumage than the ordinary 

 Koklass possesses, sometimes produces a variety 

 — formerly named as a species, Perdix montmia — 

 which may be of a rich chestnut colour almost 

 all over. 



Meyer's Koklass. 



Pucrasiameyeri, Brit. Mus. Cat., Birds, Vol. XXII, p. 

 315- 



The cock of this species is very like the Common Indian Kok- 

 lass, but has a yeUow collar at die back of the neck ; the hen is 

 distinguished by having the outer tail-feathers nearly all chest- 

 nut. It extends from the Mekong river to Central Tibet. 



Yellow-necked Koklass- 



Pucrasia xanthospila, Brit. Mus. Cat., Birds, Vol. XXII, 

 p. 315 ; Song-ky, Chinese. 



This has a bufi or chestnut collar, but can be distinguished 

 from both Meyer's Koklass and the common species by having 

 the outer tail-feathers grey, barred with black ; this point wiU 

 also distinguish the hen. It ranges from North-west China to 

 Eastern Tibet, in the mountains. 



Darwin's Koklass. 



Pucrasia darwini, Brit. Mus. Cat., Birds, Vol. XXII, 

 p. 316 ; Song-ky, Chinese. 



In this species, the sides of the cock are buff in tlie ground- 

 colour, with black longitudinal bands ; he has no buff colour. 

 The hen is most like that of the last species, but has the bars 

 on the tail-feathers only scantily represented by spots. It in- 

 habits the Eastern Chinese mountains. 



