VIREONIDJE. XXXI. 75 



In all the families of Passeres, v/here the existence of 

 nine primaries is supposed to he characteristic, I have 

 invariably found, as far as my observations have extend- 

 ed, that there were two of the small feathers referred to, 

 while in those of ten primaries but one would be 

 detected." 



* Wings long and pointed, i or more longer Uiaa the tail ; first 



primary very small or apparently wanting, less than i length 



of second. YIKEOSYLVIA, 1. 



** Wings relatively short and rounded, not one -fourth longer 

 than the tail; first primary f or more length of second; bill 

 stout VIREO, 2. 



/. VIREQSYLVIA, Bonaparte. LONG -WINGED VIREOS. 

 < Vireo, Vieillot. 



* Slender species, the bill slender, light horn color, pale below; 



commissure straight and culmen relatively so; no wing bars 

 uor conspicuous orbital ring; feet weak. (Vireosylma) 

 \ Primaries apparent!}' 9. 



1. V. olivacea, (L.) Bon. RED -EYED VIREO. GREEX- 

 LET. Olive green, crown ashy, edged on each side with 

 blackish; a white superciliary line, and below this a 

 dusky streak; white below, somewhat olive shaded; eyes 

 reel; L. 6; W. 3; T. *>. E. U. S., very abundant in 

 v/oodland; an energetic songster. 



2. V. philadelphica, Cassin. PHILADELPHIA GREEXLET. 

 Dull olive green, becoming ashy on crown; no black 

 lines on head; a whitish superciliary line; below faintly 

 yellowish, fading to white on throat, etc.; L. 4f ; W. 2f ; 

 T. 2. E. U. S., scarce. 



ft Primaries evidently 10. 



3. V. gilva, (Vieill.) Cass. WARBLING VIREO. Colors 

 exactly as in the preceding, but the spurious quill 

 evident; L. 5|; W. 2f ; T. 2 E. N. A., frequent; an 

 exquisite songster, nesting in tall trees in cities, etc. 



