224 



REVIEW OF AMERICAN BIRDS. 



[part I. 



abore olive green; the forehead, loral region, and sides of head extending a 

 little above the eyes and over the ^ars, black ; the rest of the head above 

 ashy, glossed with brown, the color extending over the sides of the occiput to 

 the black of cheeks. Whole under parts, with edge of wings, rich yellow; 

 the lining of wings rather paler ; the sides tinged with olive green. Upper 

 mandible black ; lower paler, or whitish. Legs apparently flesh color. 



Total length, 5.30 ; wing, 2.35 ; tail, 2.40 ; graduation, .36 ; diflference be- 

 tween 1st and 4th quills, .24 ; length of bill from forehead, .50, from nostril, 

 .35 ; along gape, .62 ; greatest depth, .16 ; tarsus, .86 ; middle toe and claw, 

 .75 ; claw alone, .25 ; hind toe and claw, .55 ; claw alone, .27. 



In the best specimen before me (24,042) there is a line of whitish 

 feathers in the fold of skin bounding the lower eyelid inferiorly, 

 apparently concealed from view in ordinary cases. The feathers on 

 the extreme edge of the eyelid are, however, black, not white as in 

 O. macgilUvrayi. 



(94.) This specimen has the hill rather stouter than the preceding. 



Oeotltlypis aequinoctialis. 



Motacilla cequinoctialis, Gm. S. N. I, 1788, 972. — Trichas ceq. Geat. — 

 Geothlypis ceq. Cab. Mus. Heln. I, 1850, 16. — Sclatek, Catal. 1861, 

 27,no.l71 (Trinidad; Cayenne).— Taylor, Ibis, 1864, 81(Trinidad). 

 Sab. Northeastern portion of South America (Cayenne ; Trinidad, etc.). 



(No. 2,905.) Bill stout ; the culmen and commissure gently curved from 

 the base. First quill about equal to the 9th ; 3d and 4th longest. Upper 

 parts olive green ; forehead, with loral region and cheeks, including a short 

 space above the eye and ear coverts, black. Top of the head ash gray, with 

 rounded or somewhat pointed outline on the occiput, so that the olive of the 

 nape extends forward to the black cheeks, cutting off the ashy. Under parts 

 yellow, with perhaps a faint tinge of ochry along the belly. Upper mandible 

 dark brown ; lower nearly white. Legs apparently flesh color. A line of con- 

 cealed grayish feathers on the lower eyelid. 



Total length, 5.00 ; wing, 2.50 ; tail, 2.30 ; graduation, .46 ; difference be- 

 tween 1st and 4th quills, .30 ; length of bill from forehead, .60, from nostril, 

 .36 ; along gape, .65 ; depth, .19 ; tarsus, .90 ; middle toe and claw, .82 ; claw 

 alone, .22 ; hind toe and claw, .66 ; claw alone, .30. 



The differences between the species of gray-crowned Geothlypis 

 from Brazil (velatus), and its ally {aequinoctialis) from northern 

 South America (Cayenne, Guiana, and Venezuela), were first con- 

 trasted by Cabanis, and appear to be substantially correct as stated. 



