234 CHECK-LIST OF NORTH AMERICAN BIRDS. 



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

 HAB. Southern Arizona, Mexico, and Guatemala. 



461. Contopus virens (LINN.). 



Wood Pewee. 



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

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



[Bi 39 , 0255, R 3 2o, 382.] 



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

 Canada southward. 



462. Contopus richardsonii (SWAINS.). 



Western Wood Pewee. 



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



%. 

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



[B 138, C 255 a, R 321, C 383.] 



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

 through Central America to Colombia. 



GENUS EMFIDONAX CABANIS. 

 Empidonax CAB. J. f. 0. 1855, 480. Type, Tyrannula pusilla SWAINS. 



463. 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. 



464. Empidonax difficilis BAIRD. 



Baird's Flycatcher. 



Empidonax difficilis BAIRD, B. N. Am. 1858, 198 (in text). 



