276 BIEDS OF BRITISH GTJIANA. 



secondaries black margined with white ; bastard-wing, primary- 

 coverts, and primary-quills black, the inner webs margined 

 with white ; tail black tipped with white, much more broadly on 

 the outer feathers ; loral space and a narrow ring o£ short feathers 

 round the eye white, a patch of black hair-like feathers in front 

 of the eye ; ear-coverts greyish brown ; throat, breast, abdomen, 

 and under tail-coverts ash-grey, somewhat darker on the sides of 

 the body ; axillaries, under wing-coverts, and inner edges of quills 

 below pale sulphur-yellow, the remainder of the under surface 

 of the quills pale brown ; lower aspect of tail black, with white 

 tips to the feathers. 



Total length 127 mm., exposed cnlmen 13, wing 68, tail« 46, 

 tarsus 17. 



The male described was collected on the Supenaam River. It 

 may be observed that in this specimen the flight-quills are some- 

 what worn and pale in colour. The other male birds in the 

 collection are moulting. 



Adult female. Entirely different from the adult male — having 

 the crown of the head dark chestnut, the back, scapulars, upper 

 tail-coverts, sides of face, and sides of breast dull olive-green, 

 the upper wing-coverts black margined with ferruginous, the 

 outer margins of the secondary-quills buff, the middle tail-fathers 

 ochreous, with a dark brown subterminal spot and narrowly 

 tipped with buff, the outer feathers blackish broadly tipped with 

 buflf, the throat ochreous-yellow, the remainder of the under 

 surface pale yellow, including the under wing-coverts, the under 

 surface of the quills brown with buff inner edges, and the lower 

 aspect of the tail blackish, with buff tips to the feathers. "Wing 

 65 mm. 



Th« female from which the description is taken was collected 

 on the Makauria River in August 1910. ' 



The young male is similar to the adult female in the early 

 stages of its plumage. It can usually be distinguished, however, 

 in having the crown of the head dusky instead of chestnut, 

 and the back ochreous instead of green. The breast very soon 

 becomes darker, lead-coloured feathers Tjeing intermixed with 

 yellow, and glossy blue-black feathers appear on the crown of the 

 head. One of the latest remains of youth appears to be the buff 

 tips to the tail-feathers. 



