SYLVICOLIDiE — THE WARBLEES. 
29 
Genus OPORORNIS, Baird. (Page 20.) p 
Average dimensions: Length, 6.00; wing, 3.00; tail, 2.25. 
Throat and crown ash-color ; a white ring round the eye. No black on the | 
side of the head. Hab. Eastern United States. ( Connecticut Warbler .) O. agilis. \ 
Throat and superciliary stripe yellow ; top of the head and a streak beneath 
the eye black. Nest on ground. Eggs white; finely sprinkled with reddish. 
Hab. Eastern United States ; to Panama and Cuba. (. Kentucky Warbler.) O . formosus. 
Genus GEOTHLYFIS, Caban. (Page 20.) 
Nest on ground. Eggs white, with dark spots. 
Species and Varieties, , 
Throat yellow Series I. 
Throat ash . ........... Series II 
Series I. 
A. Black mask extending beneath the eye and on the auriculars. 
1. G. trichas. Black mask bordered along its posterior edge with pale ashy | i 
or whitish; maxillae black. Sexes dissimilar. 9- Olive-brown above; 
throat only, distinctly yellow ; no black mask. Juv . Without either black 
or pure yellow ; above olive-brown, like 9 > beneath pale ochraceous-buff. 
Length about 4.50. 
Abdomen almost always whitish; occiput russet-olive. Bill, from 
nostril, .30; tarsus, -70; wing, 2.25; tail, 2.15. Hab. Whole of United 
States; in winter most of West Indies, and Middle America, north to 
Guatemala. {Maryland Yellow-throat.) .... var. trichas. 
Colors similar; abdomen yellow. Bill, .45 ; tarsus, .90; wing, 2.50; 
tail, 2.50. Hab. Nassau; New Providence ; Bahamas . var. rostratus. 
Abdomen bright yellow ; occiput whitish-ash tinged with yellow. Bill, 
.32; tarsus, .75; wing, 2.45; tail, 2.50. Hab. Eastern Mexico (Ja- 
lapa?) var. melanops . 
2. G. eequinoctialis. Black mask not bordered posteriorly by ashy or 
whitish ; much narrower on forehead than on auriculars ; maxillae yellow. 
Sexes similar. Hab. South America. Several varieties. 
B. Black mask not extending underneath the eye, but confined to lores and 
frontlet. 
3. G. poliocephala. Bill much as in Granatellus. Above olive-green ; the 
crown light ash ; beneath yellow. Sexes similar. Hab. Central America. 
Series II. 
4. G. Philadelphia. Head all round ashy ; lores only, black. Sexes nearly 
similar. Length, 5.50. 
Eyelids dusky (except in 9 ) 5 a black patch on jugulum of £. 9- 
Throat tinged with yellow- Hab. Eastern Province of North America ; 
in winter south to Panama. (. Mourning Warbler.) var. Philadelphia. 
Eyelids white ; no black patch on jugulum. 9 • Throat not tinged 
with yellow. Hab. Western and Middle Province of United States ; 
in winter south to Costa Rica (Western coast). {Macgillivray's War- 
bler) var. macgillivrayi. 
