KOKLASS PHEASANTS 



KEY TO THE FORMS OF PUCRASIA 



I. A pair of spurs present (males). 



a Mantle with a single black shaft streak. 

 a' Sides and flanks principally grey, 



a" No chestnut nuchal collar macrolopha macrolopha. 



b" Chestnut collar on nape ......... macrolopha biddulphi. 



b' Sides and flanks black, edged with grey macrolopha nipalensis. 



c' Sides and flanks chestnut macrolopha castanea. 



b Mantle with two black streaks. 

 d' A distinct nuchal collar. 

 c" Nuchal collar yellow. 



a Basal portion of outer rectrices dominately grey . . . . xanthospila xanthospila. 

 b Basal portion of outer rectrices dominately rufous . . . xanthospila meyeri. 



d" Nuchal collar orange xanthospila ruficollis. 



e' No distinct nuchal collar xanthospila joretiana. 



c Mantle with four black streaks. 

 /' Ventral plumage more or less chestnut .... . . darwini darwini. 



g' Ventral plumage not chestnut darwini styani. 



II. No spurs present (females). 



a Base of outer rectrices black or rufous. 



a' Outer pairs of rectrices with black contour markings .... macrolopha macrolopha. 

 b' All but outer pair of rectrices with bar-like black markings . . macrolopha biddulphi. 

 c All but outer pair of rectrices chestnut on outer web .... macrolopha nipalensis. 



d' Both webs of all outer rectrices chestnut xanthospila meyeri. 



b Base of outer rectrices grey. 



/ Black bars across tail complete xanthospila xanthospila. 



xanthospila ruficollis. 

 . xanthospila joretiana. 

 darwini darwini. 



f Black tail-bars broken or incomplete 



