214 BIRDS OF BRITISH GUIANA. 



Adult female. Similar to the adult male. Wing 108 mm. 



This species is not represented in the McConnell collection, and 

 the above descriptions are taken from specimens in the British 

 Museum collected by the late Henry Whitely on Mount Roraiuia 

 and Twek-quay Mountains — Salvin-Grodman collection. 



Breeding-season. Unknown in British Guiana. 



JVest. Unrecorded in British Guiana. 



Jl^ggs. Undescribed from British Guiana. • 



Range in British Guiana. Mount Roraima and Twek-quay 

 Monnta.ins (Whitely). ' 



Extralimital Range. North Brazil. * 



Habits. Unrecorded in British Guiana. 



Genus MYIOBIUS Gray. 



Myiohius Gray, List Gen. Birds, first edition, p. 30, 1840. Type M. bar- 

 bafus (Gmel.). 



Fig. 88. — Myiolius barbatus. % 



The members of this genus are small birds with flat bills, the 

 width at the basal portion being about half the length of the exposed 

 culmen ; the upper mandible is sharply hooked at the tip and the 

 base is furnished with well-developed rictal bristles. The wing 

 is rounded, the third, fourth, and fifth primaries longest and equal, 

 the second shorter than the fifth but much longer than the sixth. 

 The tail is proportionately long, being nearly six-seyenths the 

 length of wing, and is square at the tip. The tarsus is about one- 

 fourth longer than the exposed culmen, and the hind toe and claw 

 are about equal in length to the middle toe and claw. Colo- 

 ration : male and female similar. 



