386 REVIEW OF AMERICAN BIRDS. [PART I, 
Head above nearly pure ash. Second 
quill shorter than 10th . + guianensis.! 
Head above washed with ochraceous. 
Second quill longer than 10th. Size 
larger . 5 » 3 : . viridis. 
Superciliary rufous reaching only to eye. 
Lower mandible weak; flesh color. 
Head above strongly washed with 
ochraceous . > ° . . ochrocephala. 
B. Vertex and flape olive green, like the back; cheeks and 
jugular band, with sides of breast, yellowish, or olive 
green. Legs flesh color? Lower mandible dusky. 
Forehead chestnut brown, this color extending back- 
ward to the nape as asuperciliary band. Cheeks 
and jugulum yellowish. Upper mandible pale virenticeps. 
Forehead plumbeous, with a dark chestnut band 
from nostrils toeyeonly. Cheeks and jugulum 
olivaceous. Upper mandible black ° - nigrirostris. 
Of the species described, C. sulflavescens and C. viridis are those which 
have least strongly marked distinctive characters. 
In examining the preceding analytical arrangement of the species 
of Cyclorhis some interesting geographical considerations present 
themselves. The most northern species (C. flaviventris) exhibits 
most yellow beneath, this diminishing progressively in more southern 
species, as C. subflavescens (Costa Rica), and C. flavipectus 
(northern part of South America). All these more northern species 
have pale-colored legs, while those of Eastern South America have 
dusky legs, and like those just mentioned have the vertex and nape, 
with whole cheeks, more or less ash, in decided contrast to the 
back. The two Andean, on the contrary, have these parts like the 
back. All the species, as a rule, have the under mandible plumbeous 
black at the base, caused by the deposit of a black pigment on the 
bone; this is only exceptionally absent except in ochrocephala, 
where it seems never to occur. In all, the upper mandible is pale 
in the dried skin; said sometimes to be red in life; in nigrirostris 
only is it black. The iris is said in most species to be either red or 
yellowish. 
Cyctiorhis flavivemtris. 
Cyclaris flaviventris, LArr. Rev. Zool. 1842, 133 (Santa Cruz, Mex.).— 
Cycloris fl. Box. Consp. 1850, 330.— Cyclorhis fl. ScuarEr, P. Z. 8. 
1856, 99; 1858, 448 ; 1859, 363 (Jalapa) ; 1864, 173 (City of Mexico). 
! Specimens from Ceara, Brazil (perhaps autumnal), have yellow extend- 
ing over the breast, much as in flavipectus, but with dusky legs, the vertex 
tinged with ochraceous. . : 
