SYLVICOLID.E— THE WARBLERS. 221 



Series VII. 

 Throat black in ^, mixed witli blacl^; in 9. 



A. Sides strual'ied; black of throat with its posterior outline eoncave. 

 a. Side of head white anil black. 



19. D. nigrescens. A small yellow spot over the lore ; above ash; be- 

 neatli white. (J. Whole crown, uniform glossy black; back streaked 

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

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

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

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



h. Side of head yellow and black, or yellow and olive. 



Black of throat covering jugulum ; a hidden yelloiu 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 Guatemala 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 anteriorly to the jugulum ; no yellow spot on forehead. 



22. D. tOTvnsendi. 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. Hah. North 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 nearly all yellow. <J. 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 nut yellow. 



24. D. kirtlaudi. 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. Hah. Eastern Province of United States 

 (Cleveland, Ohio), and Bahamas. 



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

 the forehead 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. Hah. Cuba. 



B. OUve-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. 



' D. jtityophila, Baikd, Rev. 208. (Sylvicola p. Gunul. Ann. N. Y. Lye. Oct. TSoo, 160.! 



