VIRE08YLVIA. 



839 



Vtrtotylvia agilit. (Ouatemala.) 



(No. 2,034.) Similar to V. ol'warea in olive of npper parts, lead colored 

 cap edged witli blackJHli, a wititiali superciliary, and dutiky lurai Htripe. 

 Sidus, liow6V«r, more couMpiououHly olivace- 

 oas yellow ; axillara and orisHum purer yeU 

 low ; inner edges of quills and tail feathers 

 palu, but distinctly yellowish ; rest of under 

 partH greenish-white. 



Third quill longest ; 2d and 'tth scarcely 

 lead ; let intermediate between 5th and 6th. 



(No. 2,034.) Total length, 5.50; wing, 

 2.80; tail, 2.35 ; width of outer feather, .30; 

 difference of 1st and 3d primaries, .27, of 2d 

 and 5th, .15, of 3d and 9th, .54; length of 

 bill from forehead, .66, from nostril, .37, along gape, .77; tarsus, .70; middle 

 toe and claw, .53 ; hind toe and claw, .44 (claw broken). 



The ashy cap does not extend over the nape, and is rounded off 

 behind, leaving the sides of occiput olive. 



A specimen from Trinidad, belonging to Mr. A. Newton, differs in 

 much brighter and deeper olive and yellow shades ; the ash of cap 

 extends farther back on the nape, but is rather rounded behind. 

 The concealed portion of the tail feathers is almost as distinctly 

 olive as the back. The wing is unusually long, measuring 2.95 ; the 

 first quill is about equal to the fifth ; the difference of shortest and 

 longest quills .62. 



Another specimen (No. 8,050, from Guatemala), which may pos- 

 sibly belong even to a different species, is equally bright in colora- 

 tion with preceding, and the ash of cap extends still more over the 

 nape, widening behind ; the posterior outline almost transverse. The 

 tail feathers are broader (.35) ; the wing shorter (2.75) ; the first quill 

 intermediate between the fifth and sixth ; the difference of longest 

 and shortest quills .55. One from Ecuador, referred here, in poor 

 condition, differs in some minor points. One from Buenos Ayres, 

 again, is unusually large, the tail longer, the wing equal to the 

 Trinidad specimen. 



Compared with V. chivi, of the La Plata region, this species, as 

 described above, is considerably larger, and in size nearer to V. oli- 

 vacea; the wings are more pointed, the olive yellow and yellow of 

 the sides and under parts brighter and more distinct. 



From V. olivacea it differs in the much brighter coloration of 

 the under parts, and in the wing formula, as well as in inferior size, 

 lu many points of coloration it bears a clo.se resemblance to V. Jlavo- 

 riridis. It is, however, smaller and less brightly colored, and the 

 olive yellow of the sides does not encroach so much on the breast. 

 There is also an appreciable difference in the markings of the head, 



