THRYOPHILrS. 355 



The bill is comparatively long and pointed, the Avidth at the 

 posterior part of the nostrils about equal to its depth, and the 

 nostrils oval in shape. The wii]g is rounded, the fourth, fifth, 

 and sixth primaries longest, and the third about equal to the ' 

 seventh. The tail is rounded and graduated, the outer feather on 

 each side about seven-tenths the length of the middle ones. The 

 tarsus is about one-third longer than the exposed culmen. 

 Coloration : male and female similar. 



5G7. Thryophilus alMpectus. 

 Schomburgk's White-faced Wren. 



ThryotJioriis alhipectun Cab. in Schomb. Reis. Gruian. iii. p. 67.3, 1848 



(British Gruiana). 

 Thryojjhilus leucotis (nee Lafr.) Shai-pe, Cat. B. Brit. Mus. x. p. 207, 



ISSl. 

 Thrtfophiliis cdhipectus Brabourne & Chubb, B. S. Amer. i. p. 332, 

 'no. 3390, 1912. 



Adult male. Crown of the head, sides of the neck, lesser upper 

 wing-coverts, and entire back rufous-brown ; greater upper Aving- 

 coverts, bastard- wing, pri ma ly-co verts, and flight-quills blackish 

 barred with rufous, the inner edges of the last paler ; tail also 

 black barred with rufous, rather brighter and more broadly than 

 on the wing-quills ; lores, a ring of short feathers round the eye, 

 and a line behind the latter white ; cheeks and ear-coverts also 

 white, more or less marked with blackish ; throat white ; breast and 

 abdomen isabelline-buff, becoming darker and inclining to rufous 

 on the flanks and under tail-coverts; under wing-coverts white 

 tinged with buff ; under surface of flight-quills dark brown with 

 buff edgings; lower aspect of tail similar to its upper surface. 



Total length 131 mm., exposed culmen 10, wing 64, tail 51, 

 tarsus 23. ^ 



The specimen described was collected at Bartica in 1911. 



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

 Wing 59 mm. 



Breeding-season. Unrecorded in Piritish Guiana. 



Nest. It nests in low bush or small trees in the Savannas 

 {Si'homhurgk). 



Eggs. Undescribed from British Guiana. 



Range in British Guiana. Upper Takutu Mountains, Ituribisi 

 River, Supenaam Kiver, Bartica, Bonasika River, Aljary River 

 (McConnell collection). 



2x2 



