640 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Zool., XV, 1908, 310 (Surinam; Brit. Guiaua; n. Brazil). — Barrett, Auk 

 xxix, 1912, 99 (Marshfield, Massachusetts, May 30 and July 29, 30, 1911),— 

 Brooks (W. S.), Auk, xxix, 1912, 531 (Manoinet Point, Massachusetts, 

 abundant in August, 1912).— Bunker, Kansas Univ. Sci. Bull., vii, 1913, 

 139 (Douglas Co., Kansas, 1888, 1901, 1905, 1906, 1911; 5 spec.).— Jewell, 

 Auk, XXX, 1913, 423 (near Colon, Panama, Dec). — Wetmore, Bull. 326, 

 U. S. Dept. Agric, 1916, 45 (Porto Rico. Vieques, and (Julebra; breeding?; 

 food). 

 L[arus] atricUla Keyserling and Blasius, Wirb. Eur., 1840, pp. xc^^, 243. — 

 Gray, Gen. Birds, iii, 1846, 654. — Willis, An. Rep. Smithson. Inst, for 1858 

 (1859), 286 (Nova Scotia, rare). — Newton (A. and E.), Handb. Jamaica, 1881, 

 117.— RiDGWAY, Man. N. Am. Birds, 1887, 35. 

 Larus atricilla atridlla Noble, Bull. Mus. Comp. Zool., Ix, Aug., 1916, 367 (Guade- 

 loupe, Aug., Sept.). 

 Larus (Chroecocephalus) atricilla Coues, Birds Northwest, 1874, 650. 

 L[arus] (Chroicocephalus) atricilla Ridgway, Ann. Lye. N. Y., x, 1874, 391 (Illinois). 

 Gavia atricilla Macgillivray, Man. Brit. Orn., ii, 1842, 240; Brit. Bii'ds, v, 1852, 



585. 

 0{avia'\ atricilla Blasius, Journ. fiir C)rn., 1865, 378. 

 [Chroicocephalus] atricilla Bruch, Journ. fiir Ora., 1853, 106.— Lichtenstein, 



Norn. Av. Mus. Berol., 1854, 98 (Porto Rico). 

 [ChroiococephaliLs] atricilla Gundlach, Journ. fiir Orn., 1861, 348. 

 Chroicocephalus atricilla Cabanis, -Journ. fur Orn., 1857, 235 (Cuba). — Lawrence, 

 in Baird, Rep. Pacific R. R. Surv., ix, 1858, 850; Ann. Lye. N. Y., viii, 1864, 

 103 (Sombrero); viii, 1867, 299 (vicinity New York City); Mem. Bost. Sof. 

 N. H., ii, 1874, 317 (Mazatlan, Sinaloa); Bull. U. S. Nat. Mus., no. 4, 1876. 51 

 (Juchitan, Ventosa, and San Mateo, Oaxaca, Aug. -Feb.). — Baird, Cat. N. 

 Am. Birds, 1859, no. 667; Rep. U. S. and Mex. Bound. Surv., ii, pt. ii, 1859. 

 27 (Brazos, Texas). — Sclater and Salvin, Ibis, 1859, 233 (Belize, Brit. 

 Honduras, breeding). — Wheaton, Ohio Agric. Rep., 1860, no. 268 (s. Ohio). 

 —Gundlach, Journ. fiir Orn., 1862, 94 (Cuba); 1874, 314 (Porto Rico); 1875, 

 385 (Cuba; habits); 1878, 162, 191 (Porto Rico); Orn. Cubana, 1876, 308; Anal. 

 Soc. Esp. Hist. Nat., vii, 1878, 408 (Porto Rico).— Coues, Proc. Ac. Nat. Sci. 

 Phila., 1862, 309 (monogr.); Check List, 2d ed., 1882, no. 786.— Sclater, Proc. 

 Zool. Soc. Lond., 1864, 179 (near City of Mexico).— Salvin, Ibis, 1864, 388 

 (Chiapam, Guatemala; both coasts Central America). — Dresser, Ibis, 1866, 

 44 (Galveston, Texas). — Zeledon, Cat. Avesde Costa Rica, 1882, 36. — Stearns 

 and Coues, New England Bird Life, ii, 1883, 351. — Stahl, Ornis, vol. 3, 1887, 

 453 (Porto Rico). 

 C[hroicocephalus] atricilla Ridgway, Ann. Lye. N. Y., x, 1874, 391 (Illinois). — 



Coues, Key N. Am. Birds, 2d ed., 1884, 750. 

 Chroecocephalus atricilla Newton (A. and E.), Ibis, 1859, 371 (near St. Croix and 

 St. Thomas, Greater Antilles).- Coues, Proc. Ac. Nat. Sci. Phila., 1866, 99 

 (Colorado River, etc., Arizona); 1871, 40 (Fort Macon, North (-arolina). — 

 Allen, Bull. Mus. Comp. Zool., ii, 1871, 366 (e. Florida). — Merrill, Proc. 

 U. S. Nat. Mus., i, 1878, 172 (Fort Brown, Texas, breeding near coast and on 

 prairies). 

 Chrooecephalus atricillus Vehrill, Proc. Essex Inst., iii, 1862, 159 (coast of Maine, 



resident; a few breeding on islands). 

 Larus (Chroecocephalus) atricilla Coues, Birds Northwest, 1874, 650 (monogr.). 

 Xema atricilla Boie, Isis, 1822, 563.— Gould, Birds Europe, v, 1837, pi. 426 and 

 text. — Bonaparte, Geog. and Comp. List, 1838, 62. — Gray, List Birds Brit. 

 Mus., Anseres, 1844, 437.— Gosse, Birds Jamaica, 1847, 437. — ^Jardine, 

 Contr. Orn., 1849, 86 (Bermudas, 1 spec). — Hurdis, Jardine's Contr. Orn., 

 1850, 13 (Bermudas?).— Albrecht, Journ. fur Orn., 1862, 207 (Jamaica). 



