106 BIRDS OF BRITISH GUIANA. 



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

 Wing 80 mm. 



. An immature bird from the Supenaam River differs from the 

 adult in having the fore-neck squamated. 



Breeding-season. Unknown in British Gruiana. 



Nest. Unrecorded in British Guiana. 



Eggs. Undescribed from British Gruiana. 



Range in British Guiana. Ituribisi River, Supenaam River, 

 Bartica, Karaakabra River, Bonasika River, Makauria River, 

 Anarica River, Tiger Creek (McConnell eoUention) ; Bartica, 

 Kamacusa ( Whitely). 



Extralimital Range. Surinam (Penarrf), Venezuela, North-west 

 Brazil. 



Habits. Unrecorded in British Gruiana. 



Genus PHILTDOR Spix. 

 PMlydor Spix, Av. Bras, i p. 73, IS24. Tvpe P. atricapillus (Wied). 



Fig. 45. — Philydor atricapillus. 



The species on which this genus was founded has a straight bill, 

 the length of the exposed culmen being rather more than twice 

 that of its depth. The wing is rounded, the third, fourth, and fifth 

 primaries longest, the second" shorter than the fifth but much 

 longer than the sixth. Tail proportionately long and rounded at 

 the tip ; its texture is soft and its length about seven-tenths that 

 of the wing. The tarsus is about one-third longer than that of the 

 exposed culmen, and the middle toe and claw exceeds in length 

 that of the hind toe and claw. Coloration : male and female 

 similar. 



Key to the Species. 



A. Under surface tawny-ochraceous P. pyrrTiodes, p. 107. 



B. Under surface olive-yellow P. e. gttianensis, ■p. 107, 



