WOOD WARBLERS * 401 



from six to twelve feet from the ground. The gray vireo's song 

 Mr. Henshaw considers the finest of all vireo songs, as it has not only 

 beauty and variety of note but mellowness of expression. 



FAMILY MNIOTILTID^: WOOD WARBLERS. 



KEY TO GENERA. 



1. Gape with conspicuous bristles. 



2. Under parts mainly clear yellow Wilsonia, p. 427. 



2'. Under parts marked with red, orange, or yellow (except ^^^ o 

 young Cardellina). "^^ i 



Fig. 493. 

 3. Bill broad and much flattened at base . . Setophaga, p. 429. 



3'. Bill narrow and deep at base. Face and throat red in ^^fo^ 

 adults, brown in young . . . Cardellina, p. 430. ^^ j. 



Fig. 494. 

 1'. Gape without conspicuous bristles. 



2. Tarsus about equal to middle toe and claw ; 

 upper parts conspicuously streaked with 

 black and white . . Mniotilta, p. 402. 

 Fig. 495. Fig. 496. 



2'. Tarsus longer than middle toe with claw ; J^lf^====z5»' 

 upper parts not distinctly streaked with ^rv. V x 

 black and white. ^ 



3. Bill deep, and strongly curved . . Icteria, p. 426. 



3'. Bill not deep, nor strongly curved. 

 4. Bill narrowly wedge-shaped. 



5. Rictal bristles obvious ; upper parts blue with 

 olive patch . . . Compsothlypis, p. 406. 



Fig. 499. 5'. Rictal bristles obsolete; ujijicr parts not blue 

 with olive patch . Helminthophila. p. 402. 



4'. Bill slenderlv conical. 



<-. 



5. Tail niark.'d with whitf or veHow. Fig. 600. 



Dendroica, p. 407. 

 5'. Tail not marked with white or yt'llow. 



(). Tarsus h'.sH tlian one third as h)iiL;- juswing; 



un(h'r parts stn-aked . . Seiuriis, p. 423. 



0'. Tarsus decidedly nuire than one third as long 



as wing-; under parts not streaked; partly 



yellow Geothlypis. p. 424. 



