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336 



REVIEW OP AMERICAN BIRDS. 



[PAllT I. 



Vtrnoiylvla pivreiridU. (Pnaamn.) 



Yireosylvia flaToviridis. 



Vireosylviujlav. Cassin, Pr. A. N. Sc. V, Feb. 1851, 152.— Ib. VI, pi. ii 

 ( Panama). —ScLATKH, P. Z. S. 186(i, 2!»8 (Cordova).— In. I85lt, 375 

 (Uaxaca ; April). — Ib. Catal. 1801, 44, no. 2tJ4. — Sclatkr & SAirrir, 

 Ibis, I, 1859 12 (duateuiala).— K/no y?ai;. Bairh, Birds N. Am. 

 1858, 332.— Phyllomanesjtao. Cab. Jour. 1861, 93 (Costa Kicn). 



ITah. From nortbern border of Mexico to Istbuius of Panama, e.-tpecially on 

 Vest side. 



(No. 3,976, % .) Above olive green ; tbe wbolo top of head and nape aali 

 color, tbe edges of this uap, and a loral line dusky, but not very decidHdIy so. 



A grayish-white line from 

 y nostrils over the eye. Be- 



neath white, the sides of tiie 

 neck, breast, and btnly bright 

 olivaceouR-yellow ; the axil- 

 lars and crissuin rich sul- 

 phur yellow. On the breast 

 the yellow extends almost 

 to the median line, the color 

 of opposite sidi'S aeparatwl 

 by a narrow interval. Quills 

 dusky brown ; margined ex- 

 ternally, except at ends of primaries, with olive green, internally with grayish- 

 white of a decided yellow shade. Tail feathers dark olivaceous-brown, bright 

 olive externally, internally olivaceous-yellow. Iris yellow or "red." 



Bill born-color, paler below. Legs plumbeous. Wings long and pointed. 

 Second and 3d quills nearly equal ; 4th a little less; 1st about intermediate 

 between 4th and 5th. 



(No. 3,976.) Total length, 6.00; wing, 3.20; tail, 2.60; difference of 1st 

 and 2d quills, .30, of 2d and 5th, .15, of 9th and longest, .70 ; length of bill 

 from forehead, .70, from nostril, .45, along gape, .85 ; tarsus, .70 ; middle toe 

 auvL claw, .58, claw alone, .14; hind toe and claw, .42, claw alone, .20. 



Specimens appear to vary somewhat in intensity of coloration, 

 size and shape of bill, and in dimensions, but little otherwise. The 

 sexes are similar. The wing formula above mentioned is the jjreva- 

 lent, though in a few instances the first quill is about equal to or a 

 very little less than the fifth. 



This species is of about the size of V. olivacea, or a little larger; 

 the tail longer proportionally, the wings shorter and much less 

 pointed. The wing formula is much the same, but the difi"erence of 

 the shortest and longest primaries is about .70, instead of .90, as in 

 olivacea. The bills are not dissimilar ; the coloration, however, 

 appreciably differeni The dusky lines over and through the eye 

 are much less vivid, llie white one less distinct. The decided olive 

 yellow of the entire side of body from neck to crissum, extending 



