336 REVIEW OF AMERICAN, EIRDS. [rART I. 



Head above nearly pure asli. Second 



quill shorter than lOtL . . yuianensis.^ 



Ilead above washed with ochraceous. 

 Second quill longer than 10th. Size 



larger viridts. 



Superciliary rufous reaching only to eye. 

 Lower mandible weak ; liesh color. 

 Head above strongly washed with 



ochraceous ..... ochroccphala. 

 B. Vertex and nape 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 a superciliary band. Cheeks 

 and jugulum yellowish. Upper mandible pale virendceps. 

 Forehead plumbeous, with a daik chestnut baud 

 from nostrils to eye only. Cheeks and jugulum 

 olivaceous. Upper mandible black . . nigrirostris. 



Of the species described, C. su!flavesr.ens 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. Jlaviveniris) exhibits 

 most yellow beneath, this diminishing progressively in more southern 

 species, as G. subjlavescens (Costa Rica), and C. Jlavipectus 

 (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 ochroccphala, 

 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 nigrirodris 

 only is it black. The iris is said in most species to be either red or 

 yellowish. 



Cyclorhis flariventris. 



Cijclaris flaviventris, LafFw Rev. Zool. 1842, 133 (Santa Cruz, Mex.)- — 

 Cydorisjl. Box. Consp. 1850, 3Z0. — Cyclorhis Jl. Sclater, P. Z. S. 

 1856,99; 1858,448; 1850,3G3 (Jalapa); 1864,173 (City of Mexico). 



' Specimens from Ceara, Brazil (perhaps autumnal), have yellow extend- 

 ing over the breast, much as in flavipcclus, but with dusky legs, the vertex 

 tinged with ochraceous. 



