134 BIRDS OF BRITISH GUIANA, 



At the time when Brabourne and Chubb published their ' List of 

 the Birds o£ South America ' there were eighty-eight genera and 

 four hundred and eighty-four species. Thirty-eight of the genera 

 and sixty-nine of the species are represented in British Guiana. 



Genus MECOCEECULUS Sclater. 



Mecocercwlus Selater, P. Z. S. 1862, p. 113. Type M. setophagoides 

 (Bonap.). 



Fig. 54!.- — Mecocerculus setophagoides. 



The species of which this genus consists' are small birds with 

 flattened bills. The length of the exposed culmen exceeds the 

 width at the base by about one-third only. The wing is rounded, 

 the second, third, fourth, and fifth primaries longest and subeqnal, 

 the first about equal in length to that of the eighth. The tail is 

 square at the tip and about half the length of the wing. 

 The tarsus is rather long, being slightly more than double the 

 length of the exposed culmen. Hind toe and claw about equal in 

 length to that of the outer toe and claw. Coloration : male and 

 female similar. 



436. Mecocerculus setophagoides. 



Bonaparte's Crat-Tyrant. 



Tyrannula setophagoides Bonap. Atti Sesta Riun. Sci. Ital. Milan, 



p. 405, 1845 (Santa Fe di Bogotd). 

 OchthcBca setophagoides Salvin, Ibis, 1885, p. 291 (Eoraima, 5000 to 



6000 ft.). 

 Mecocerculus leucophrys (nee d'Orb.) Sclater, Cat. B. Brit. Mus. xiv. 



p. 27 part, 1888 (Eoraima). 

 Mecocerculus setophagoides Brabourne & Chubb, B. S. Amer. i, p. 263, 



no. 2678, 1912. 



Adult. General colour above earth-brown, the upper wing- 

 coverts broadly edged with fulvous; bastard-wing, primary- 

 coverts, primary and secondary quills dark brown with fulvous 

 edgings to the innermost secondaries ; tail somewhat paler than 

 the quills, slightly edged on the outer webs with olive-brown; lores. 



