TYRANNID^. — 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 consj^icuous; 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. ^\\ 

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



3. C. richardsoni, (Sw.) Bd. Western Wood Pe^vee. 



Darker; bill dusky below. N. W., E. to Wis.; nearly 

 like the preceding, but the notes and nesting different. 



6. EMPIDONAX, Cabanis. Least Flycatchers. 



1. E. acadicus, (Gm.) Baird. Small Green-Crested 

 Flycatcher. Clear olive green, wing bands butfy; 

 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. i- 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 Gth; middle toe f length of tarsus; longest primary 

 f inch longer than secondaries; L. 5f ; W. 2f ; T. 2|^; 

 Ts. I; Tel. |. U. S. 



5 



