372 BIRDS OF BRITISH GUIANA. 



flight-quills blackish with pale edges to the inner and a portion of 

 the outer webs of the last ; tail also blackish, all except the two 

 middle feathers tipped with white, which increases in extent 

 towards the outermost, which is edged with white — the whole length 

 on the outer web (the portion of the white and dark patterns 

 meet) is smoke-colour ; a whitish supraloral streak, which is con- 

 tinued over the eye where it is more pronounced ; lores blackish ; 

 ear-coverts pale brown, fore part of cheeks and throat white, like 

 the abdomen and under tail-coverts ; lower throat and breast pale 

 grey, like the axillaries and sides of the body ; under wing-coverts 

 white more or less intermixed with brown; basal portion of quills 

 • below isabelline, the remainder blackish ; lower aspect of tail 

 greyish brown with white tips to the feathers. 



Total length 249 mm., exposed culmen 16, wing 109, tail 112, ' 

 tarsus 35. 



The specimen described was collected on the Abary River in 

 September 190.6. 



Adult male. Similar to the adult female but rather larger. 

 Wing 115 mm. 



Young. Differs from the adult in the absence of the shaft- 

 streaks on the head, in having the back and upper tail-coverts 

 ochreous-bufF instead of ash-grey, with indications of dark shaft- 

 lines ; under surface white, with dark shaft-lines to the feathers 

 on the lower throat and breast, which is tinged with isabelline. 



The young bird described was collected on the Upper Takntu 

 Mountains in 1908. 



Breeding-season. Unknown in British Gruiana. 



Nest. Unrecorded in British Guaina. 



Eggs. Undescribed from British Guiana. 



Range in British Guiana. Mount Roraima, Upper Takutu 

 Mountains, Mazaruni River, Abary River (McConnell collection) ; 

 Mount Roraima {Whitely). 



Extralimital Range. North Brazil. 



Habits. Unrecorded in British Guiana. 



