902 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Page 548, footnote h: To synonymy add: 



Empidonax* cider i argcntinus Bcrlepsch, Proc. Fourth Inst. Orn. Congr., Feb., 

 1907, 479. 



Page 551: To citations of Empidonax ffaviventris add: ' 



Nehrling, Our Native Birds, ii, 1896, 361. 



Page 553: To citations of Muscicapa acadica add: 



ViEiLLOT, Nouv. Diet. d'Hist. Nat., xxi, 1818, 481. 



Page 554: To citations of Empidonax acadicus add: 



Nehrling, Our Native Birds, ii, 1896, pi. 33, fig. 6. 



Page 555 : To citations of Empidonax inrescens add : 



Nehrling, Our Native Birds, ii, 1896, 356. 



Page 557: To citations of Empidonax traillii traHlii add: 



Miller (W. D.), Bull. Am. Mus. N. H., xxii, 1906, 167 (Rio Sestin, n. w. Chihuahua; 

 breeding). 



Page 572: To citations of Empidonax canescens add: 



Miller (W. D.), Bull. Am. Mus. N. H., xxii, 1906, 167 (Villa Oeampo, n. w. Durango, 

 Feb. 19). 



Page 573: To citations of Empidonax pulvenus add: 



Miller (W. D.), Bull. Am. Mus. N. H., xxii, 1906, 168 (Cienega de las Vaeas, n. w. 

 Durango, Apr. 3). 



Page 578: To citations of Empidonax dijficilis add: 



Bryant (W. E.), Proc. Calif. Ac. Sci., ser. 2, 1889, 291 (Cape San Lucas district; 

 Cerros 1.; Valladares, fall; San Pedro Martir, May). 



Page 581: To citations of Empidonaac cineritius add: 



Bryant (W. E.), Proc. Calif. Ac. Sci., ser. 2, 1889, 291 (La Laguna, Comondu, Santa 

 Margarita I., San Benito, and San Pedro Martir Mts. up 1o 10,000 ft.). 



Page 587 : To synonymy of Empidonax atriceps add : 



Ochthoeca atriceps Berlepsch, Proc. Fourth Int. Orn. Congr., Feb., 1907, 470. 



Page 590: To citations of Empidonax fulvifrons pygmseus add: 



Miller, Bull. Am. Mus. N. H., xxii, 1906, 168 (Cienega de las Vacas, n. w. 

 Durango, Apr. 3). 



Page 596: To citations of Muscicapa fusca add: 



Vieillot, Nouv. Diet. d'Hist. Nat., xxi, 1818, 454. 



Page 597 : To synonymy of Sayornis phoehe add : 



Muscicapa phoebe Vieillot, Nouv. Diet. d'Hist. Nat., xxi, 1818, 481. 

 Mlnseicapa] phoebe Lichtenstein, Verz. Doubl., 1823, 54. 



Page 597 : To citations of Sayornis phoebe add : 



RiDGWAY, Orn. Illinois, i, 1889, 347.— Bendire, Life Hist. N. Am. Birds, i, 1895, 

 272, pi. 1, fig. 28 (egg).— Nehrling, Our Native Birds, i, 1896, 348, pi. 5. fig. 3. 



