BIRDS OF NORTH AND MIDDLE AMERICA. 579 



Osgood, North Am. Fauna, no. 21, 1901, 46 (Cumshewa Inlet, Queen Char- 

 lotte I., common).— Brewster, Bull. Mus. Comp. Zool., xli, 1902, 120 (Cape 

 district. Lower California, Nov., Dec.).— Oberholser, Auk, xix, 1902, 300 

 (Chisos and Guadalupe Mts., w. Texas).— Bailey (Florence M.), Handb. 

 Birds W. U. S., 1902, 260; Auk, xxi, 1904, 355 (upper Pecos, New Mexico, 

 8,000 to 11,000 ft. alt.).— SwARTH, Pacific Coast Avifauna, no. 4, 1904, 25 

 (HuachucaMts., breeding at 7,000 to 9,000 ft.).— Miller (W. D.), Bull. Am. 

 Mus. N. H., xxi, 1905, 356 (E.'^cuinapa and Mt. Lisiarraga, Sinaloa, Oct. to 

 Apr.). 



Evipidonax] difficilis Ridgway, Man. N. Am. Birds, 1887, 340. — Coues, Key N. 

 Am. Birds, 5th ed., i, 1903, 531. 



\Empidoncu:] difficilis Sharpe, Hand-list, iii, 1901, 139. 



Empidonax fiavvientris, var. ? difficilis Cooper and Suckley, Rep. Pacific R. R. 

 Surv., xii, pt. ii, 1860, 170, footnote (Shoalwater Bay and Fort Steilacoom, 

 Washington). 



Empidonax flmiventris, var. difficilis Allen, Bull. Mus. Comp. Zool., iii, 1872, 

 179 (Utah).— Ridgway, Bull. Essex Inst., v, Nov., 1873, 184 (Colorado).— 

 Baird, Brewer, Ridgway. Hist. N. Am. Birds, ii, 1874, 380. — Lawrence, 

 Mem. Bost. Soc. N. H., ii, 1874, 287 (Mazatlan; Tres Marias; Plains of 

 Colima). 



Empidonax flaviventris . . . var. rfi^ici/is Henshaw, Zool. Exp. W. 100th Merid., 

 1875, 359 (Rio Grande, Colorado; Fort Wingate, Inscription Rock, and South 

 Apache, Arizona; Willow Springs, Mount Graham, and Bowie, Arizona). 



[Empidonax flaviventris] b. diffiicilis Coues, Birds Northwest, 1874, 256. 



Empidonax flaviventris diffiicilis Ridgway, Bull. Essex Inst., vi, Oct., 1874, 174 

 (Sierra Nevada, near Carson City); vii, 1875, 33 (Parley's Park, Utah).— Minot, 

 Bull. Nutt. Orn. Club, v, 1880, 231 (Colorado, 8,000 ft. alt.; notes).— Drew, 

 Bull. Nutt. Orn. Club, vi. 1881, 140 (San Juan Co., Colorado, breeding at 

 10,000 ft.).— Brewster, Bull. Nutt. Orn. Club, vii, 1882, 206 (Camp Lowell 

 and Tucson, Arizona; crit.).— Coues, Check List, 2d ed., 1882, no. 389.— 

 Allen and Brewster, Bull. Nutt. Orn. Club, viii, 1883, 195 (Colorado 

 Springs, Colorado). 



E\mpidonax]f\laviventris] difficilis '.' Coues, Key N. Am. Birds, 2d ed., 1884, 442. 



Empidonax flaviventris (not of Baird) Sclater, Ibis, 1859, 441, part (Mexico). — 

 Cooper, Orn. Cal., i, 1870, 328.— (?) Seton, Auk, iii, 1886, 321 (Duck Mt., 

 w. Manitoba breeding). 



[Pyrocephalus] flaviventris Gray, Hand-list, i, 1869, 361, no. 5493 (part). 



Empidonax bairdi (not of Sclater) Salvin and Godman, Biol. Centr.-Am., Aves, 

 ii, 1889, 74. part. 



Empidonax insulicola Oberholser, Auk, xi\-, July, 1897, 300 (Santa Barbara 

 I., California; coll. U. S. Nat. Mus.).— Black, Auk, xiv, 1897,405 (nesting 

 habits; descr. nest and eggs). — Grinnell (J.), Pub. no. 1, Pasadena Ac. 

 Sci., 1897, 15 (San Cljjmente I.; habits); Condor, vii, 1905, 51 (crit.; con- 

 siders=(Zi//fci7is.)— American Ornithologists' Union Committee, Auk, 

 xviii, 1901, 302 (check list no. 464.2).— Bailey (Florence M.), Handb. Birds 

 W. U. S., 1903, 260. 



\Empidonax] insulicola Sharpe, Hand-list, iii, 1901, 139. 



E[mpidonax] insulicola Coues, Key N. Am. Birds, 5th ed., i, 1903, 531. 



Empidonax bairdi perplexus Nelson, Auk, xvii, July, 1900, 263 (Puerto Angel, 

 Oaxaca; coll. U. S. Nat. Mus.). 



[Empidonax] perplexus Sharpe, Hand-list, iii, 1901, 139. 



