644 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Jan., April; Iquique, Peru, winter; Coquimbo, Chile, Nov.; Valparaiso, 

 Chile; etc.)-— Ridgway, Bull. Xutt. Orn. Club, v, 1880, 32 (near Warsaw, 

 Illinois, May); Proc. U. S. Nat. Mus., iii, 1880 (Cat. N. Am. Birds), 207; 

 Nom. N. Am. Birds, 1881, no. 674. — Thompson, Proc. T' . S. Nat. Mus., xiii, 

 1890, 469 (Winnipeg, Selkirk Settlement, Red River Settlement, etc., Mani- 

 toba, breeding). ^Berlepsch and Stolzmann, Proc. Zool. Soc. Lond., 1892, 

 400 (Chorillos and Callao, Peru). — Salvin and Godman, Biol. Centr.-Am., 

 Aves, iii, 1903, 419 (City of Mexico; Zacatecas; Laguna de Baltazar, Puelsla; 

 Mazatlan; Progreso, Yucatan; Chiapam and Champerico, Guatemala; Pan- 

 ama; Pacific coast South America to Chile; St. Bartholomew). — Nicoll, 

 Ibis, 1904, 50 (Valparaiso Bay, Chile, Feb., abundant). — CarPvIker, Ann. 

 Carnegie Mus., vi, 1910, 415 (Puerto Limon, Costa Rica). — American Orni- 

 thologists' Union, Check List, 3d ed., 1910, p. 40. — Lacey, Auk, xx\dii, 

 1911, 203 (Kerr\dlle, Texas, April, May).— Stone, Auk, xxix, 1912, 99 (Phila- 

 delphia, Pennsylvania, 1 spec, Oct. 22, 1911.). — Conover, Auk, xxix, 1912, 

 388 (Lake Mendota, Wisconsin, April 23, 1911) .—Smyth, Auk, xxix, 1912, 510 

 (Montgomery Co., Virginia, 1 spec, Oct. 22, 1898). — Gifford, Proc. Calif. 

 Ac. Sci., 4th ser., ii, pt. 1, 1913, 42 (Albemarle, Chatham, and Narborough 

 islands, Galapagos, Feb., March). — Grinnell, Pacific Coast AAdf., no. 11, 

 1915, 23 (HjT^erion, Los Angeles Co., California, 3 specs., Nov. 22, 1913, Oct. 17 



1914, Nov. 24, 1914).— Cooke, Bull. 292, U. S. Dept. Agric. (Biol. Survey), 



1915, 54, figs. 26, 27 (range and migrations). 



L[ari(s]franklini Gray, Gen. Birds, iii, 1846, 654. — Nelson, Bull. Essex Inst., viii, 



1876, 146 (Lake Michigan, n. e. Illinois, rare visitant; Milwaukee, Wisconsin, 



1 spec, 1850). — MacFarlane, Ibis, 1887, 207 (San Lorenzo, Peru). 

 [Larus]franklini Gn AY, Hand-list, iii, 1871, 115, no. 10990. — Sclater and Salvin, 



Nom. Av. Neotr., 1873, 148.— Sharpe, Hand-list, i, 1899, 140.— Forbes and 



Robinson, Bull. Liverp. Mus., ii, no. 2, 1899, 57. 

 \Larus\l franhlini Cory, List Birds West Ind., revised ed., 1886, 33 (Antilles?). 

 Lar us {Chroecocephalus)franMini Coves, Birds Northwest, 1874, 653. 

 ChroicocephalusfrankliniYihAKiSTOti, Ibis, 1862, 10 (Saskatchewan Plains, May). — 



CouES, Check List, 2d ed., 1882, no. 787.— Willard, Auk, ii, 1885, 222 



(mouth of Fox Pdver, Wisconsin, Oct. 22, 1884). 

 C[hroicoc€phalus]franklini Coves, Key N. Am. Birds, 2d ed., 1884, 751. 

 Chrcecocephalusfranklini Snow, Birds Kansas, 1873, 12. 

 Xema franklini Bonaparte, Geog. and Comp. List, 1838. 62. — Boie, Isis, 1844, 



194.— Gray, List Birds Brit. Mus., Anseres, 1844, 172. 

 G[avia]ffa7iklini BhAsivs, Journ. fiir Orn., 1865, 371 (crit.). 

 [Gavia] franklini Bonaparte, Compt. Rend., xlii, 1856, 771. 

 [Mclanolarus] franklini Heine and Reichenow, Nom. Mus. Hein. Orn., 1890. 350. 

 Larus pipixcan Wagler, Isis, 1831. 515 (Mexico; based on Pipixcan Hernandez, 



Thes., p. 32, cap. 89). 

 Xema pipixcan Boie, Isis, 1844, 194. 

 L[arus] pipixcan Gray, Gen. Birds, iii, 1846, 654. 

 [Gavia] pipixan Bonaparte, Compt. Rend., xlii, 1856, 771. 

 {Larus\ cucullatus Reichenbach, Natatores, 1848, pi. 23, fig. 296 (Mexico; ex 



Lichtenstein, manus{Ti])t). 

 [Chroicocephalus] cucullatus Bruch, Jouru. fiir Orn., 1853, 104; 1855, 290. — 



Lichtenstein, Nom. Av. Mus. Berol., 1854, 98 (Mexico). 

 Chroicocephalus cucullatus Lawrence, in Baird, Rep. Pacific R. R. Surv., ix, 



1858, 851; ed. 1860 (Birds N. Am.), 851, pi. 93, fig. 1.— Baird, Cat. N. Am. 



Birds, 1859, no. 669.— Coues, Proc. Ac. Nat. Sci. Phila., 1862, 309 (monogr.); 



Ibis, 1864, 388 (Chiapam, Guatemala; crit.).-- Salvin, Ibis, 1866, 198 (Pacific 



coast Guatemala). 



