TYRANNID^E. XXXVI. 97 



or less; L. 7; W. 3; T. 3. E. U. S., abundant; known 

 by its black bill. 



5. CONTOPUS, Cabanis. WOOD PEWEES. 



1. C. borealis, (Sw.) Baird. OLIVE-SIDED FLYCATCHER. 

 Rictal bristles short, one-fourth length of bill; tuft of 

 white cottony feathers on sides very conspicuous; middle 

 line of belly distinctly and abruptly white; otherwise 

 olive brown, paler or yellowish below; L. 7; W. 4^; 

 T. 3. Northern, S. to N. Y. 



2. C. virens, (L.) Cab. WOOD PEWEE. Rictal bristles 

 half length of bill; cottony tuft inconspicuous; wing 

 bands whitish or rusty; olive brown above; pale or 

 yellowish below; lower mandible usually pale; L. 6^; 

 W. 34; T. 3. U. S., very abundant. 



3. C. richardsoni, (Sw.) Bd. WESTERX WOOD PEAVEE. 

 Darker; bill dusky below. N. W., E. toWis.; nearly 

 like the preceding, but the notes and nesting different. 



6, EMPIDONAX, Cabanis. LEAST FLYCATCHERS. 



1. E. acadicus, (Gm.) Baird. SMALL GREEX-CRESTED 

 FLYCATCHER. Clear olive green, wing bands buffy; 

 whitish becoming yellowish below; yellowish ring about 

 eyes; bill pale below; primaries nearly an inch longer 

 than secondaries; 2d, 3d and 4th primaries nearly equal, 

 and much longer than 1st and 5th; 1st much longer than 

 6th; L. 6; W. 3; T. 2f ; Ts. f ; Tel. f E. U. S., frequent, 



2. E. traillii, (Aud.) Baird. TRAILL'S FLYCATCHER. 

 Olive brown, duller than preceding; bill pale below; 

 5th primary about as long as 4th, 1st not much longer 

 than 6th; middle toe f length of tarsus; longest primary 

 f inch longer than secondaries; L. of; W. 2|; T. 2; 

 Ts. f ; Tel. f . U. S. 



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