572 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
Rissa tridactyla Daut and Bannister, Trans. Chicago Ac. Sci., i, 1869, 305 (Sitka, 
Amak, etc., Alaska; Plover Bay, Siberia)—Finsca, Abh. Nat. Ver. 
Brem., iii, 1872, 84 (Alaska).—Datuu, Proc. Calif. Ac. Sci., v, 1873, 32 (Shu- 
magin Islands, Alaska; habits)—Buaxiston and Pryer, Trans. Asiat. 
Soc. Japan, viii, 1880, 190; x, 1882, 105.—Taczanowsk1, Bull. Soc. Zool. 
France, 1883, 398 (Kamchatka, etc.); Mém. Acad. St. Petersb., xxxix, 1893, 
1049 (e. Siberia) —SaunpeErs, Cat. Birds Brit. Mus., xxv, 1896, 305, 458, part, 
[Rissa] tridactyla Forses and Rosrnson, Bull. Liverp. Mus., ii, no. 2, 1899, 58. 
part (Kamchatka). 
[Larus (Rissa)] brachyrhynchus (not Larus brachyrhynthus Richardson, 1831, nor 
Gould, 1843) Brucu, Journ. fiir Orn., 1853, 103 (North America). 
Rissa brachyrhyncha TaczANowskI, Bull. Soc. Zool. France, 1876, 264; Orn. 
Faun. Vost. Sibir., 1877, 65. 
Rissa nivea (not of Gray, 1845) Bonaparte, Naumannia, 1854, 212 (nomen nudum). 
[Larus (Rissa)] niveus Brucs, Journ. fiir Orn., 1855, 285 (excl. syn.). 
R{issa] kotzebui (not of Bonaparte, 1854!) Bonaparte, Consp. Av., ii, 1857, 226. 
Rissa kotzebui Cougs, Proc. Ac. Nat. Sci. Phila., 1862, 305 (monogr.).—Etz1o7, 
Illustr., New and Unfig. N. Am. Birds, pt. 11, 1868, pl. 53, left-hand fig., 
and text.—StTesneGER, Proc. U. 8. Nat. Mus., 1883, 60. 
[Rissa] kotzebui Gray, Hand-list, iii, 1871, 117, no. 11019. 
[Larus tridactylus] var. kotzebut Couns, Key N. Am. Birds, 1872, 314. 
Larus tridactylus . . . var. kotzebui Cougs, Check List, 1873, no. 552a. 
Larus tridactylus var. kotzebui Couns, Birds Northwest, 1874, 646; in Ellioti’s 
Affairs in Alaska, 1875, 199 (Pribilof Islands) —Exuiotr, Mon. Pribylov 
Group, 1882, 132 (breeding; very numerous). 
Rissa tridactyla kotzebuei Ripaway, Cat. Aquat. and Fish-eating Birds, May, 
1883, 29. 
Rissa tridactyla kotzbuei Ripaway, Proc. U.S. Nat. Mus., iii, Aug. 24, 1880, 206 
(Cat. N. Am. Birds, no. 658a); Nom. N. Am. Birds, 1881, no. 658¢.—BzEan, 
Proc. U. 8. Nat. Mus., 1882, 167 (Bering Sea).—Netson, Cruise ‘Corwin’ in 
1881 (1883), 105 (rocky shores Bering Sea; habits).—Goss, Auk, ii, 1885, 
222 (Port Townsend, Washington, March 2, 1882).—SourHwicx and JENCcKs, 
Auk, ii, 1885, 313 (Nicasio, California). 
[Rissa] kotzebuti Bonaparte, Compt. Rend., xlii, 1856, 771. 
Rissa tridactyla kotzebuit Cougs, Check List, 2d ed., 1882, no. 783. 
Riissa] t[ridactyla] kotzebuit Couns, Key N. Am. Birds, 2d ed., 1884, 748. 
Larus kotzebuei Netson, Bull. Nutt. Orn. Club, v, Jan., 1880, 35, in text (St. 
Michaels, Alaska). 
[Rissa tridactyla] b. pollicaris Barrv, Brewer, and Ripeway, Water Birds N. Am., 
ii, 1884, 202 (no type-locality indicated and no diagnosis; but intended as 
subspecific designation of the North Pacific form; ex Stejneger, manuscript). 
Rissa tridactyla pollicaris SresnecER, Bull, U.S. Nat. Mus., no. 29, 1885, 78 (Com- 
mander Islands, Kamchatka, breeding; crit., etc.).—Turner, Auk, ii, 
1885, 158 (Nearer Islands, Alaska); Contr. N. H. Alaska, 1886, 124 (St. 
Michaels, etc., habits)—AmericaAn Ornrrno.ocists’ Unron, Check List, 
1886, and 2d ed., 1895, no. 40a; 3rd ed., 1910, p. 36.—Neztson, Rep. N. H. 
Coll. Alaska, 1887, 49 (habits), —TowNsENnp, Cruise ‘Corwin’ in 1885 (1887), 
98 (Pribilof Islands; Otter Island).—Patmin, ‘Vega’-Exped., Bd. v, 1887, 361 
(Bering Sea).—Rinveway, Proc. U. S. Nat. Mus., xvi, 1893, 663 (Middleton 
I., Alaska).—Taczanowsx1, Mém. Acad. St. Petersb., xxxix, 1893, 1052 
(e. Siberia).—Antuony, Auk, xii, 1895, 177 (San Diego, California, Feb.); 
xv, 1898, 267 (San Geronimo Island, Lower California; regular but not com- 
mon winter visitant off San Diego and about Los Coronados Islands). —THAYER 
and Banas, Proc. New Engl. Zool. Club, v, 1914, 9 (breeding westward to 
