BIKDS OF NORTH AND MIDDLE AMERICA. 505 



q. Back streaked with black, pale yellowish (or 

 dull whitish) and olive; throat and chest yel- 

 low or pale orange. 



Sendroica blackburniae, adult female 



and immature male (p. 575) 



qq. Back light olive-brownish indistinctly streaked 



with dusky; throat and chest pale yellowish 



buff Dendroica blaokburniBe, immature 



female (p. 575) 

 nn. Back gray ( with or without black streaks) or plain 

 grayish ))rown. 

 0. Superciliary stripe white, extending to end of auric- , 

 ular region; sides of neck white; auricular region 

 mostly black. [Dendroica dominica. ) 

 p. Bill larger (exposed culmen averaging 13.8 in 

 male, 12,9 in female); superciliary stripe usually 

 yellow anteriorly. (Atlantic coast of United 

 States, chiefly south of New Jersey; Florida and 

 AVest Indies in winter. ) 



Dendroica dominica dominica, adults (p. 578) 

 pp. Bill smaller (exposed culmen averaging 11.9 

 in male, 11.7 in female); superciliary stripe 

 usually entirely white. (Mississippi A'alley; 

 south in winter through Mexico to Nicaragua. ) 

 Dendroica dominica albilora, adults (p. 582) 

 00. Superciliary stripe yellow, extending but little, if 

 any, beyond eye; sides of neck and auricular 

 region gray. 

 p. Yellow of under parts extending no farther back- 

 ward than upper breast. ( Dendroica gracin: ) 

 q. Larger (wing averaging 65.1 in male, 61 in 

 female); superciliary stripe whitish at poste- 

 rior extremity; yellow of chest not invading 

 breast. (Northwestern Mexico to Arizona 

 and Colorado.) 



Dendroica gracise graciae, adults (p. 584) 

 qq. Smaller (wing averaging 57 in male); super- 

 ciliary stripe shorter, wholly yellow; yellow 

 of chest invading breast. (Southern Mexico 

 to southern Honduras.) 



Dendroica graciae decora, adults (p. 586) 

 pp. Yellow of under parts extending over breast and 

 abdomen. 

 q. Wing and tail shorter (averaging 54 and 42.3, 

 respectively, in male) ; superciliary stripe nar- 

 rower anteriorly, not encroaching on forehead; 

 less black on sides of crown; colors less in- 

 tense. (Porto Rico, Greater Antilles. ) 



Dendroica adelaidae, adults (p. 587) 

 qq. Wing and tail longer (averaging 56 and 51, 

 respectively, in male) ; superciliary stripe 

 broader anteriorly, occupying sides of fore- 

 head; more black on sides of crown; gray of 

 back, etc., clearer, and yellow of under perts. 



