June, 1902. CHECK-UST OF CALIFORNIA BIRDS 43 



260 (459) Contopus borealis (Swainson) Baird. 



OuvE-siDKD Flycatcher. 



Syn. — Tyr annus borealis; Tyrannus cooperi; Nuttallornis borealis. 



Status — Common summer visitant through Transition and lower Boreal; elsewhere during 

 migration . 



261 (462) Contopus richardsoni richardsoni (Swainson) Baird. 



Western Wood Pewee. 



vSyn. — Horizopus richardsoni; Tyrannula virens; Contopus virens var. richardsoni; Con- 

 topus richardsoni saturatus. 



Status — Common summer visitant through Upper Sonoran and Transition; elsewhere dur- 

 ing migration. 



262 (464) Empidonax difficilis Baird. 



Western Flycatcher. 



Syn. — Empidonax Jiaviventris; Empidonax insulicola; Empidonax flaviventris difficilis. 

 Status — Abundant summer visitant through Upper Sonoran and Transition west of the 

 Sierras; occurs commonly elsewhere as a migrant. 



263 (464.1) Empidonax cineritius Brewster. 



Saint Lucas Flycatcher. 



Status — Known only from the record by A. W. Anthony of specimens taken in June, 

 1895, on Cuyamaca Peak, San Diego County. 



264 (466) Empidonax trailli trailli (Audubon) Baird. 



Traill Flycatcher. 



Sw.— Empidonax pusill:is; Myiobius pusilla; Tyrannula trailli; Empidonax trailli vslv. 



pusillus. 

 Status — Common summer visitant through Upper Sonoran, nesting north through the 



interior valleys to Sacramento and Honey Lake; elsewhere during migration. 



265 (468) Empidonax hammondi (Xantus) Baird. 

 Hammond Flycatcher. 



Syn. — Tyra7tnula hammondi. 



Status — Common summer visitant through Transition and lower Boreal along the whole 



length of the Sierras; recorded as breeding from Mount Shasta south to San Jacinto Peak; 



elsewhere during migration. 



266 (469) Empidonax wrighti Baird. 



Wright Flycatcher. 



Syn. — Empidonax obscurus, part. 



Status — Fairly common summer visitant along the Sierras south to Mount Whitney; 

 sparingly elsewhere during migration. 



