CHETSOMUS, — PSEUDOAGELiEUS. 567 



in Georgetown, and remarks : — " In swampy places on the out- 

 skirts o£ the town, but chiefly along the coast, the common small 

 Yellow-headed Reed-bird {Xanthosomut icterocephalvs) will gene- 

 rally be found in considerable numbers among the low bush and 

 tall reeds and grasses." 



The following note has been copied from Beebo (Our Search 

 for a Wilderness, p. 351): — "Little Yellow-headed Blackbirds. 

 Few more beautiful sights can be imagined than a cloud of these 

 birds rising ahead of the train or launch, and scattering far and 

 wide over and through the reeds. The general colour is a rich 

 black, which itself contrasts strongly with the green of the 

 savanna. But when we add to this the brilliant yellow head and 

 neck .... the colour scheme is one which is never forgotten.'' 



Genus PSEUDOAGELiEUS Ridgw. 



PseudoagelcBus Ridgway, Proe. Biol. See. Washington iii. p. 155, 1901. 

 Type P. imthurni (Sclater). 



This genus is easily distinguished by the long axillaries and the 

 long and graduated tail. The bill is long, compressed, and slender ; 

 its width and depth at the base are about equal in measurement, 

 which is about one-third the length of the exposed culmen. The 

 wing is rounded, the second, third, and fourth primaries longest 

 and equal, the first about equal in length to the fifth. The tail is 

 rounded and graduated, the outermost feather on each side being 

 about one-fourth shorter than the middle ones, and the entire tail 

 nearly as long as the wing. The tarsus is slightly longer than the 

 exposed culmen, which is about equal in length to the middle 

 toe and claw. Coloration : male and female alike. 



705. Pseudoagelaeus imtliurni. 



Imthdkn's Maksh-Bikd. 



(Plate X.) 



Agelceus imtliurni Sclater, P. Z. S. 1881, p. 213 (Kaieteur Waterfall, 

 Potaro River) ; Salvin & Godman, Ibis, 1883, p. 203 (Merume 

 Mts.) ; im Thurn, Indians of Guiana, p. 71, pi. v. 1883 (Kaieteur) ; 

 Sclater, Ibis, 1884, p. 13 (Merume Mts.) ; Salvin, Ibis, 1885, p. 218 

 (Merume Mts., Roraima) ; Sclater, Cat. B. Brit. Mus. xi. p. 344, 

 1886 (Roraima, Merume Mts.). 



