VIREONIDJE. XXXI. 75 



In all the families of Passeres, where the existence of 

 nine primaries is supposed to be 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 than the tail ; first 



primary very small or apparently wanting, less than i length 



of second. VIKEOSYLVIA, 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. 



7. VIREOSYL VIA, Bonaparte. LONG -WINGED VIREOS. 

 < Vireo, Vieillot. 



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



commissure straight and culmen relatively so; no wing bars 

 nor conspicuous orbital ring ; feet weak. (Vireosylma) 

 f Primaries apparently 9. 



1. /. olivacea, (L.) Bon. RED - EYED VIREO. GREEN- 

 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 

 red; L. 6; W. 3^; T. $>. E. U. S., very abundant in 

 woodland; an energetic songster. 



2. /. philadelphica, Cassin. PHILADELPHIA GREENLET. 

 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. 



ff Primaries evidently 10. 



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

 exactly as in the preceding, but the spurious quill 

 evident; L. 5^; W. 2f ; T. &k E. N. A., frequent; an 

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



