DARWIN'S KOKLASS PHEASANT AND ITS ALLIES 



In this group of Koklass the pattern on the mantle and much of the body plumage 

 is quadruple, instead of double as in xanthospila, the two black lines of the latter group 

 of birds being split into four. 



The ventral chestnut becomes reduced in these southern Koklass, there being 

 even in the strongest marked birds a tendency to greater distribution and correlated 

 dilution of the pigment. It disappears entirely in the subspecies styani. 



VOL. in 41 G 



