358 



KOlVni AMERICAN BIRDS. 



Lanivireo. ]Jill compressed, stout ; culnieii aielied IVoiii the base, oommis- 

 suru curved. Sujteiciliarv stii|ie stopping at posterior angle of the eye and 

 curving under it, enelosing (lie eye in a conspicuous orbital nng, interrupted only 

 in front. Two conspicuous wliite bands on the wing. 



a. No spurious primary Sp. flavifrons. 



b. Vi'ith an acute spurious primary .... Sp. solitai-iits, plumbeu.i. 

 Vireo. Bill stout, scarcely compressed, sub-cylindrical. First primary not 

 spurious, or, if so, not acute. 



(/. Two cons])icuous light bands on wing . Sp. atricapillnn, novcboraceii.ii.i, hutloni. 



h. One distinct light band on wing, and this not sharply dclincd, the anterior 



one being almost obsolete Sp. belli, pusiltus, vicinior. 



Sub(;enus VIREOSYLVIA, Bon. 



Vircoxtilvia, Hon. Oeog. Coiiip. List, 1838. (Type, Mnsckapa oUuacca, LiN.) 

 riujlliimaws, V\\\. Arcli. 1847, 1, 321. (No type meiitioucd ; uaiue propo.si'd as substitute 

 I'ur Vircosijlviu.) 



Gv.-n. CiiAR. Wings long and pointed, one third or one fourth longer than the nearly 

 even or slightly rounded tail. First quill very snuiU (less than one third the second), some- 

 times apparently wanting. Second quill longer than tlio seventh, much longer than the 



VirfO olivareus. 



secondaries. Tarsi short (.scarcely exceeding .70 of an inch) ; toes rather long. Hody 

 slender and elongated. Bill slender, narrow, straight ; the culmen straight for its basal 

 half, the commissure quite straight ; light horn-color, paier beneath. Feet weak. Type, 

 V. oUvaceus. 



Species and Varieties. 



C0M.M0N CiiAHACTERS. All .species olive above, white or yellowish beneath. 

 .An ashy or brownish cap, contrasting more or less abruptly with the olivo back. 

 A whitish superciliary stripe extending to the na[)e, and a dusky one to ami lie- 

 hind the eye. No light l)an(ls on the coverts. Inside of wings (Hanks some- 

 times) and erissum yellowish, otherwise usually white beneath. 



No spurious primary Serien I. 



A spurious primary ... Series II. 



Series I. (Xo spurious priiiiiirt/.) 

 A. A dusky " mustache " or cheek stri|)e along each side of the throat. 

 1. V. caUdris. Eyes red? 



Q. No distinct dusky line along side of llie crown. 



Light stripes of the head dingy lirownish-bulT; crown scarcely 

 ashy; l>aek olive-brown ; cri.ssum and lining of the wing pure pale 



