644 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
Jan., April; Iquique, Peru, winter; Coquimbo, Chile, Nov.; Valparaiso, 
Chile; etc.).—Ripeway, Bull. Nutt. 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.—-THomrson, Proc. U. 8. Nat. Mus., xiii, 
1890, 469 (Winnipeg, Selkirk Settlement, Red River Settlement, etc., Mani- 
toba, breeding).—Bzruzrscu and Srorzmann, Proc. Zool. Soc. Lond., 1892, 
400 (Chorillos and Callao, Peru).—Sauvin and GopMan, Biol. Centr.-Am., 
Aves, iii, 1903, 419 (City of Mexico; Zacatecas; Laguna de Baltazar, Puebla; 
Mazatlan; Progreso, Yucatan; Chiapam and Champerico, Guatemala; Pan- 
ama; Pacific coast South America to Chile; St. Bartholomew).—Nicot, 
Ibis, 1904, 50 (Valparaiso Bay, Chile, Feb., abundant).—CarRIKER, Ann. 
Carnegie Mus., vi, 1910, 415 (Puerto Limon, Costa Rica).—AMERICAN ORNI- 
gvHoLociIsts’ Union, Check List, 3d ed., 1910, p. 40.—Lacey, Auk, xxviii, 
1911, 203 (Kerrville, Texas, April, May)—Sronz, Auk, xxix, 1912, 99 (Phila- 
delphia, Pennsylvania, 1 spec., Oct. 22, 1911.).—Conover, Auk, xxix, 1912, 
388 (Lake Mendota, Wisconsin, April 23, 1911) .—Smytu, Auk, xxix, 1912, 510 
(Montgomery Co., Virginia, 1 spec., Oct. 22, 1898).—Guirrorp, Proc. Calif. 
Ac. Sci., 4th ser., ii, pt. 1, 1918, 42 (Albemarle, Chatham, and Narborough 
islands, Galapagos, Feb., March).—GRINNELL, Pacific Coast Avif., no. 11, 
1915, 23 (Hyperion, Los Angeles Co., California, 3 specs., Nov. 22, 1913, Oct. 17 
1914, Nov. 24, 1914).—Cooxgs, Bull. 292, U. 8. Dept. Agric. (Biol. Survey), 
1915, 54, figs. 26, 27 (range and migrations). . 
L[arus] franklint Gray, Gen. Birds, iii, 1846, 654.—Netson, Bull. Essex Inst., viii, 
1876, 146 (Lake Michigan, n. e. Illinois, rare visitant; Milwaukee, Wisconsin, 
1 spec., 1850).—MacFar.ane, Ibis, 1887, 207 (San Lorenzo, Peru). 
[Larus] franklini Gray, Hand-list, iii, 1871, 115, no. 10990.—Sciarsr and Savin, 
Nom. Av. Neotr., 1873, 148.—Suarps, Hand-list, i, 1899, 140.—Forszs and 
Rosryson, Bull. Liverp. Mus., ii, no. 2, 1899, 57. 
[Larus]? franklini Cory, List Birds West Ind., revised ed., 1886, 33 (Antilles?). 
Larus (Chrecocephalus) franklint Cougs, Birds Northwest, 1874, 653. 
Chroicocephalus franklini Buaxtston, Ibis, 1862, 10 (Saskatchewan Plains, May).— 
-Couss, Check List, 2d ed., 1882, no. 787.—Wittarp, Auk, ii, 1885, 222 
(mouth of Fox River, Wisconsin, Oct. 22, 1884). 
C[hroicocephalus] franklini Cours, Key N. Am. Birds, 2d ed., 1884, 751. 
Chreecocephalus franklini Snow, Birds Kansas, 1873, 12. 
Xema franklint BonaParte, Geog. and Comp. List, 1838, 62.—Bozs, Isis, 1844, 
194.—Gray, List Birds Brit. Mus.pAnseres, 1844, 172. 
G[avia] franklini Brastus, Journ. fiir Orn., 1865, 371 (crit.). 
[Gavia] franklini Bonaparte, Compt. Rend., xlii, 1856, 771. 
[ Melanolarus] franklini Heinz and RetcueNnow, Nom. Mus. Hein. Orn., 1890, 350, 
Larus pipixcan Wacuer, Isis, 1831, 515 (Mexico; based on Pipixcan Hernandez, 
Thes., p. 32, cap. 89). 
Xema pipixcan Born, Isis, 1844, 194. . 
Larus] pipizcan Gray, Gen. Birds, iii, 1846, 654. 
[Gavia] pipizan Bonaparte, Compt. Rend., xlii, 1856, 771. 
[Larus] cucullatus Reicuensacu, Natatores, 1848, pl. 23, fig. 296 (Mexico; ex 
Lichtenstein, manuscript). 
[Chroicocephalus] cucullatus Bruow, Journ. fir Orn,, 1853, 104; 1855, 290.— 
Licurenstein, 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, pl. 93, fig. 1_—Barrp, Cat, N. Am. 
Birds, 1859, no, 669.—Covuzgs, Proc. Ac. Nat. Sci. Phila., 1862, 309 (monogr.); 
Ibis, 1864, 388 (Chiapam, Guatemala; crit.).--SaLvin, Ibis, 1866, 198 (Pacific 
coast Guatemala), 
