J34 CHECK-LIST OF NORTH AMERICAN BIRDS. 



[B- C2 54 , R 319, C 381.] 

 HAB. Southern Arizona, Mexico, and Guatemala. 



4G1. Contopus virens (Lixx.). 

 Wood Pewee. 



Muscicapa virens LINN. S. N. ed. 12, I. 1766, 327. 

 Contopus virens CAB. J. f. O. III. Nov. 1855, 479. 



[B 139,0255, R 320, C 382.] 



HAB. Eastern North America to the Plains, and from Southern 

 Canada southward. 



4G2. Contopus richardsonii (SWAINS.). 



Western Wood Pewee. 



Tyrannula richardsonii SWAINS. F. B. A. II. 1831, 146, pi. 46, lower 



fig. 

 Contopus richardsonii BAIRD, B. N. Am. 1858, 189. 



[B 138, C 255 rt, R 321, C 3 S 3 .] 



HAB. Western United States, from the Plains to the Pacific, south 

 through Central America to Colombia. 



GENUS EMPIDONAX CABANIS. 

 Empidonax CAB. J. f. O. 1855, 480. Type, Tyrannula pit silla SWAINS. 



1 <;.">. Empidonax flaviventris BAIRD. 



Yellow-bellied Flycatcher. 



Tyrannula flaviventris BAIRD (W. M. & S. F.), Pr. Ac. Nat. Sci. 



Phila. July, 1843, 283. 

 Empidonax flaviventris BAIRD, B. N. Am. 1858, 198. 



[B 144, C 259, R 322, C 388.] 



HAB. Eastern North America to the Plains, and from Southern 

 Labrador south through Eastern Mexico to Panama, breeding from the 

 Northern States northward. 



404. Empidonax difficilis BAIRD. 

 Baird's Flycatcher. iY 



l : .ipido>ia.\ dijjlcilis BAIRU, B. N. Am. 1858, 198 (in text). 



