SYLVICOLID/E — THE WARBLERS. 221 



Sn-ies VII 

 Throat black in ^, mixed with blaclv in 9- 

 A. Sides streaked; black of throat with its posterior outline concave. 



a. Side of head white and black. 



19. D. nigrescens. A small ^yellow spot over the lore ; al)ove ash; be- 

 neath white. (J. Whole crown, uniform glossy Jjlack ; back streaked 

 with black. 9 • Crown ash streaked with black ; throat mixed with white 

 anteriorly. Jar. Crown and cheeks ashy; throat mostly white; back 

 without streaks. Hab. Western and Middle Province of United States, 

 south, in winter, into Western Mexico (Oaxaca). 



b. Side of head yellow and l^lack, or yellow and olive. 



Black of throat corerhuj jiKjuhini ; a hidden yelloio spot in middle of forehead. 



20. D. chrysopareia. Black above, pure white below ; no tinge of yel- 

 low behind the black jugular patch. Hah. Eastern Middle America, 

 from Gruatemala to Texas (San Antonio). 



21. D. virens. Olive-green above, the crown and back without streaks ; 

 beneath white, the breast and anal region tinged with black. Hah. 

 Eastern Province of North America, from Greenland to Panama; Cuba; 

 Oaxaca ; Heligoland, Europe ! 



Black of throat confined anteriorhj to thejagulum; no yellow spot on forehead, 



22. D. townsendi. Above olive-green, the crown and back with con- 

 spicuous black streaks ; beneath yellow anteriorly, and white posteriorly. 

 9, black of throat mixed with yellow; juv., no black on throat, and 



streaks on back obsolete. Hab. Nortli and Middle Province of United 

 States, south, in' winter, into Guatemala. 

 B« Sides not streaked; black of throat with its posterior outline convex. 



23. D. occidentalis. Above ash tinged with olive; beneath white. 

 Head nrarly all yellow. ^. Top of head yellow with a few small 

 black spots ; nape black ; back streaked with black ; sides pure white. 

 (9 not seen.) Juv. Yellow of crown overlaid by olive ; above green- 

 ish-plumbeous, without any black on nape or back ; throat yellowish- 

 whitish ; sides tinged with ashy. Hab. Western and Middle Province 

 of United States, south to Guatemala. 



Group C. 



A. Above ash ; no supra-loral stripe ; eyelids not yellow. 



24. D. kirtlaiidi. Above, including side of head and neck, bluish-ash; 

 crown and back streaked with black ; beneath (except crissum) pale yel- 

 low ; breast speckled, and sides .streaked with black; lores and orbital 

 region, black ; eyelids white. Hab. Eastern Province of United States 

 (Cleveland, Ohio), and Bahamas. 



25. D. pityophila.' Above, including side of head and neck, dull ash; 

 tliL' lorchcad and crown olive-green; crown and back not streaked; 

 beneath white ; the throat and jugulum yellow ; sides ashy ; no specks 

 on breast, nor streaks on sides, but a few along side of neck, between the 

 ash and yellow. Hab. Cuba. 



B. Olive-green or brown above; a supra-loral stripe of yellow ; eyelids yellow. 

 a. Above olive-green, without streaks ; crissum white ; sides of breast with 

 obsolete grayish streaks. 



1 D. jntyophila, Baird, Rev. 208. {Sylvimht p. GirNDL. Ann. N. Y. Lye. Oct. 1855, 160.) 



