yellow, extending on to the thighs and vent; under tail-coverts white, the basal ones with a 

 tinge of yellow, the long ones with a broad subterminal bar of blackish brown ; axillaries brown ; 

 under wing-coverts brown, with rufous edges to the feathers ; quills dusky blackish below : " bill 

 and legs brownish black, the latter sometimes paler brown or flesh-colour ; iris greyish brown " 

 (Neuwied) . Total length 4 - 9 inches, culmen 0'35, wing 4'3, tail 22, tarsus 0'4. 



Adult female. Similar to the male in colour, but without the serrations on the outer edge of the outer 

 web. Total length 4 - 5 inches, culmen - 35, wing 3"7, tail 1"9, tarsus 04. 



The series from different parts of South America in the British Museum shows that very little 

 variation takes place in individuals from the various countries inhabited by the species. The 

 brown colour of the upper surface is deeper in some birds than it is in others, but this may be 

 due to age. On the whole, however, southern birds are darker than northern ones, and the palest 

 of all are the specimens from Roraima, which have a decidedly lighter brown shade on the lower 

 back and rump, showing an approach to S. uropijgialis. 



The following are the measurements of some specimens from different localities :— • 



Total length, 

 in. 



a. Ad. Roraima, Nov. 29 (H. Whitely) 5"2 



b. ? . „ Nov. 23 „ 50 



c. $ . „ Jan. 5 „ 4"7 



d. Ad. Cayenne {Mas. P. L. S.) 5'0 



e. Ad. Bahia [Wucherer) 4'9 



/•Ad. „ „ 4-9 



g. ? ad. Para {Layard) 4'9 



h. S ad. Rio [Mas. P. L. S.) . . . . 4"9 



i. S ad. Yquitos {H. Whitely) 4" 9 



*• ¥ ad. „ „ 4-5 



I. S ad. „ „ 50 



m. fj ad. Upper Ucayali (E. Bartlett) 4-8 



5 ad. Yurimaguas „ 4'1 



[?] ad. Copataza River {C. Buckley ) 4 - 7 



[cJ] ad. Rio Napo 5"2 



[(J] ad. Yuyo, Bolivia (C. Buckley) 4-7 



[J] ad. „ „ 5-0 



Wing. 



Tail. 



m. 



in. 



4-2 



1-9 



4-0 



1-9 



4-3 



1-85 



4-3 



1:9 



4-3 



1-95 



39 



1-95 



3-9 



1-9 



4-25 



195 



43 



2-1 



37 



1-9 



4-35 



2-05 



4-35 



245 



3-9 



1-95 



4-0 



215 



4-4 



2'05 



43 



1-9 



4 - 45 



22 



Young. Darker than the adults, and having the feathers of the upper surface edged with rusty edges, 

 especially distinct on the quills ; the throat and breast as well as the sides of the body are 

 ferruginous, the lower breast and abdomen washed with sulphur-yellow. 



Many specimens have rather broad white edgings to the secondaries, and as we have not been 

 able to find other traces of youth on these individuals, we believe that these margins may be 

 merely indicative of freshly moulted plumage, and that they become abraded as the plumage 

 gets worn. 



Hub. South America. 



Tins species enjoys a wide raugo in South America and extends from Rio to Bolivia 

 and Peru, throughout Brazil and Amazonia, to Guiana. The specimens from Boraima 



