110 BIRDS OF BRITISH GUIANA. 



upper Aving-coverts like the back, the median and greater series 

 more or less blackish on the inner webs ; primary-coverts and 

 primary and secondary quills also blackish with a band of rufous 

 across the middle portion of the quills, the secondaries margined 

 with the same colour at the tips, as are also the outer edges of some 

 of the primaries ; the innermost secondary entirely dull rufous ; 

 middle pair of tail-feathers rufous, the next ])air black, the fol- 

 lowing pair also black with an oblique mark of rufous at the tip 

 on the outer web, the two outer pairs rufous with more or less 

 Ijlack on the basal portion ; a w hite line over and behind the eye 

 and another one across the cheeks ; ear-coverts brown with 

 minute pale streaks ; throat dull white ; remainder of the under 

 surface dusky brown including the breast, abdomen, sides of the 

 body, and under tail-coverts ; under wing-coverts and a band 

 across the under surface of the quills orange-buff, remainder of 

 the quill-lining pale brown ; lower aspect of tail rufous and 

 black. 



Total length 122 mm., exposed culmen 1.5, wing 62, tail 48, 

 tarsus IG. 



The male described was collected on the Supenaam River in 

 1911. 



Adult female. Similar to the adult male but a little smaller. 

 Wino- ,56 mm. 



Breeding-season. Unrecorded in British Guiana. 



Nest. In the crevice of a tree al)Out two feet from the ground, 

 composed of rootlets and fibres (Beehe). 



Eijgs. Pure white and three in number (^Beehe). 



Range in British Guiana. Ituribisi River, Su[)enaam River, 

 Bartica, Makauria River, Anarica River, Great Falls Demerara 

 River, Berbice River {AlcConnell collection^ ; Mount Rorainui, 

 Kamakusa, Bartica {Whiteh/). 



Extralinntal Jia)ige. Northern Brazil, Venezuela, Colombia, 

 Peru. 



Note. Xenops heterurus. 



JCenops heterurus Cab. & Hein. Mus. Hein. ii. p. 33, 1859 (Colombia). 

 This species is not represented in the McConnell collection, 

 neither are there any specimens in the collection at the National 

 Museum from British Guiana. 



