64 
SYLVICOLINiE. TRICHAS. 
der ; tarsus slender, much compressed, longer than the 
middle toe with its claw, anteriorly covered with eight scu- 
tella, of which the upper are blended ; toes of moderate 
size, hind toe proportionally large, lateral toes equal, fourth 
adherent at the base ; claws rather long, arched, much 
compressed, laterally grooved, very acute. Plumage soft 
and blended. Wings rather short, convex, considerably 
rounded, the third and fourth quills longest, the fifth little 
shorter. Tail of moderate length, rounded, always plain, 
or without white spots. 
100. 1. Trichas Macgillivrayi, Aud. Macgillivray’s Ground- 
Warbler. — Macgillivray’s Warbler. 
Plate CCCXCIX. Fig. 4. Male. Fig. 5. Female. 
Wings rather short, the second quill longest, the fourth longer than 
the first, the tail long, considerably rounded, its feathers rounded ; 
tarsus longer than the middle toe and claw. Male olive-green above ; 
the head, hind part, and sides of the neck bluish-grey ; the fore neck 
and part of the breast greyish-black, lunulated with greyish-white ; 
a black loral band ; a conspicuous white spot on each eyelid ; the 
lower parts bright yellow. F emale olive-green above, yellow beneath, 
the sides of the neck and a band across the breast ash-grey. 
Male, 5i, 6|. Female, 5, wing 2||. 
Columbia River. Common. 
Macgillivray’s Warbler, Sylvia Macgillivrayi, Aud. Om. Biog. v. v. p. 75, 
101. 2. Trichas Philadelphia, Wils. Mourning Ground- 
Warbler. — Mourning Warbler. 
Wings of moderate length, with the second quill longest, the fourth 
shorter than the first ; the tail long, considerably rounded, its feathers 
scarcely pointed ; tarsus longer than the middle toe and claw. Male 
olive-green above, the head, hind part and sides of the neck, bluish- 
grey ; the fore neck and part of the breast deep black, lunulated with 
white ; a blackish loral band, margins of eyelids dusky grey ; the 
lower parts bright yellow. Female olive-green above”, yellow beneath, 
the sides of the neck and a band across the breast ash-grey, the throat 
yellowish- white. 
Male, 5, 8. 
New Jersey and Blue Mountains of Vermont. Rare. Migratory. 
