.IJ WARBI.HR SUNGvS. 



B. Belly yellow. 



1. Throat slate-color. 



a. No white eye-rint; ; l^reast with traces of black. 



Mouniins^ Warbler. 



b. A white eye-riny,- ; breast witli no traces of black. 



Connecticut Warbler. 



c. A white .spot on eyelid ; sides of head l)lack. ( West- 

 ern ). IMacyillivray's Warbler. 



2. Throat black. 



a. Forehead and cheeks yellow, rest of head black. 



Hooded Warbler. 



b. Forehead yellow ; crown ^\•itll a black jjatch. 



' Bachman's Warbler. 



C. Belly red. 



1. A large white patch on wing ; no chestnut on head. 



(South-west). Painted Redstart. 



2. No white wing patch ; chestnut patch on crown, i South- 



west). Red-bellied Redstart. 



III. Throat Yellow, White or Whitish; Under- 

 parts Without Streaks. 



A. Large as a Catbird. 



1. Back olive-green; throat and breast rich yellow. 



Vellow-brea.sted Chat. 



2. Back olive-gray. (We.stern). Long-tailed Chat. 



B. Much smaller. 



I. Throat yellow. 



a. Whole head, neck and breast l)right yellow. 



Protonotary Warbler. 



b. P'orehead and cheeks black ; line over yellow eye. 



Kentucky Warbler. 



c. A broad, rounded black patch on cheeks. 



Maryland Yellow-throat. 



(Note. — An artificial key to the Yellow-throats would be of such 

 doubtful value a-field that the reader is referrefl to the habitat of the dif- 

 ferent forms in the body of the paper). 



d. Head and back olive-green ; two white wing-bars. Pine Warbler. 



e. Crown blui.sh ash or gray. 



1. Upper tail-coverts yellowish olive-green. 



(a). Lower parts yellow. 



(I). Yellow intense. (We.stern). Calaveras Warbler. 



(2). Yellow less intense. Nashville Warbler. 



(b). Lower parts white or whitish. ( Western). 



Virginia's Warbler. 



2. Upper tail-coverts chestnut. (We.stern). Lucy's Warbler. 



