BIRDS OF NORTH AND MIDDLE AMERICA. 503 



America in general, chiefly eastward and northward; West Indies 



in winter. ) Dendroica coronata (p. 546) 



////. Throat yellow (rarely white or but faintly tinged with yellow in 

 immature females) ; four to five lateral rectrices with a white 

 subterminal spot on inner web. {Dendroica auduboni. ) 

 '/. Smaller (wing averaging 77.3 in male, 75.4 in female, tail 58.3 in 

 male, 56.7 in female); adult male with forehead, sides of head 

 and back mostly gray, and black on chest and sides of breast 

 less extensive, more or less broken by whitish margins to 

 feathers; adult female less heavily streaked with black on upper 

 parts, sides, and flanks. (Western North America, south 

 into Mexico in winter.) ..Dendroica auduboni auduboni (p. 551) 

 ii. Larger (wing averaging more than 80 in males, more than 76 in 

 females); adult male with forehead and sides of head black, 

 back mostly black, and black on chest and sides of head more 

 extensive, unbroken; adult females more heavily streaked on 

 upper parts, sides, and flanks. 

 j. Smaller (wing averaging 80.5, tail 62, in male); sides of occiput, 

 sides of neck, and hindneck gray streaked with black; white 

 nuchal spot and white spot on sides of lower throat smaller 

 or wanting. (Southern Arizona and northwestern Mexico. ) 

 Dendroica auduboni nigrifrons, adult male (p. 555) 

 jj. Larger (wing 82.8, tail 66.3, in male); sides of occiput, sides 

 of neck, and hindneck uniform black; white nuchal spot and 

 white spots on sides of lower throat larger. (Highlands of 

 Guatemala. ) .Dendroica auduboni goldmani, adult male (p. 556) 

 gg. No yellow spot on rump nor sides of breast. 

 //. Throat and chest black or partly black. 



/'. Whole auricular region black, gray, or olive. 

 j. Back and rump gray; superciliary and malar stripes and breast 

 white. 

 k. Pileum, auricular and malar regions, throat, and chest black. 

 ( Western United States. ) 



Dendroica nigrescens, adult male (p. 556) 

 H: Pileum streaked gray and l)lack; auricular region gray; 

 throat and chest only partly black (otherwise white). 



Dendroica nigrescens, adult female (p. 557) 

 jj. Back and rump olive-green; superciliary and malar stripes and 

 breast yellow. 

 k. Pileum, auricular region, throat, and chest black. (Western 

 North America, south to Guatemala in winter. ) 



Dendroica townsendi. adult male (p. 559) 

 A/.-. Pileum streaked black and olive-green; auricular region 

 olive-green; throat and chest only partly black (other- 

 wise yellow) . . .Dendroica townsendi, adult female (p. 560) 

 ii. Auricular region mostly yellow. 

 j. A black, dusky, or olive postocular streak, back and rump black 

 or olive-green; black of chest extended laterally over sides of 

 breast; pileum plain olive-green, plain black, or streaked 

 olive-green and black. 

 k. Pileum and back plain olive-green; breast and abdomen yel- 

 lowish white or pale yellow. 

 '. Throat and chest uniform black. 



Dendroica virens, adult male (p. 562) 



