VIREO. 469 



t'. Smaller (wiiiff loss than 2.50) ; bill small, nearly as broad as high at base, 

 and tapering rapidly to the slender, slightly hooked tip. (Color olive- 

 green or russet-olivc above, with top of head and neck ash-graj' or else 

 with tail russet; lower parts neither yellow nor green.) 



Hylophilus. (Page 478 ) 

 6'. Larger (wing not less than 3.00) ; bill stout, much deeper than w-ide at base, 

 the CLilmen curving rather abruptly toward the strongly hooked tip. 

 f'. Depth of bill at base only about half the exposed eulmen. (Lower 

 parts green, becoming j-ellow on throat, or else white with rufous 

 band across chest ; upper parts bright green, with top of head sky- 

 blue, or else olive, the sides of head striped with yellow, slate-color, 



white, and black.) Vireolanius} 



c'. Depth of bill at base much more than half the exposed eulmen. (Lower 

 parts yellow ; upper parts plain olive-green, becoming ash-gray on 

 head and neck, the forehead and broad superciliary stripe rufous.) 



Cyclorhis} 



Ge.n-us VIREO YiEiLLOT. (Page 468, pi. CXV., figs. 1-3, 5.) 



Species. 



Common Characters. — Above plain olive-green or olive-grajish, with or with- 

 out white wing-bands ; beneath whitish or yellowish, or both. Nest a veiy beau- 

 tiful basket-shaped structure suspended from a forked twig, composed of mosses, 

 lichens, fine strips of bark, etc. Eggs white, usually more or less dotted or 

 sparsely speckled round larger end with brown and blackish. 



a}. Spurious primar}-, if present, verj- narrow and pointed, and decidedly shorter 

 than tarsus, 

 t'. Wing without light bands or other distinct markings. (Subgenus Vireosylva 



Bo.VAP.) 



c'. "Without any spurious primary, or else, if present, the exposed eulmen 

 .50. or more.' 

 <P. Exposed eulmen .50, or more ; middle of chest white, 

 e". A distinct duskj* streak along each side of throat. 



Above plain dull olive-greenish, becoming gray on top of 

 head, which has a more or less distinct dusky streak 

 along each side of crown ; a conspicuous superciliary 

 stripe of dull whitish, bordered below by a distinct 

 dusky streak through the eye ; cheeks dull grayish 

 ■white or pale brownish gra\- (whole side of head, 

 including sujierciliary .stripe, sometimes strongly suf- 

 fused with dull brownish buffy) ; lower parts white, 



> Virolaniut BoNAP., Conjp. i. 1850, 3S0. Type, V. melitnphryt Dd Brs. 



' Ci/clorhU Swains., Zool. Jour. iii. 1S2S, lfi2. Type, Tnunyra t/uimimtta Gmkl. 



• The exception is V. olitaccut, which is said to have lomclimet (but very rarely) a spurious primary. 



