570 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
way).—UssuEr, Proc. Roy. Irish. Acad. (3), iii, 1894, 410.—Matuew, Birds 
Pembrokshire, 1894, 103.—Pzanrson, Ibis, 1896, 223 (Novaya Zemlya); 
1898, 203 (Novaya Zemlya).—Wooprurr, Auk, xiv, 1897, 228 (Linapin 
Park, Chicago; no date).—TRrvor-Batryg, Ibis, 1897, 593 (Spitzbergen).— 
Posson, Auk, xvi, 1899, 193 (Orleans Co., w. New York; no date).—CHar- 
MAN, Bull. Am. Mus. N. H., xii, 1899, 225 (Snow Bay, Greenland; Bird Rock, 
Gulf St. Lawrence; descr. different stages of young; crit.; descr. nest).— 
Fiemine, Auk, xxiii, 1906, 442 (Toronto, Ontario, Oct., Nov., 1899).— 
Kouer, Wilson Bull., xxii, 1910, 187 (Essex Co., New Jersey, flock of 12, 
Feb. 22, 1903). . 
RF [tssa[ tridactyla Gray, Gen Birds, iii, 1846, 655.—Ripeway, Ann. Lyc. N. Y., x, 
1874, 293 (Illinois, on Lake Michigan, in winter); Man. N. Am. Birds, 1887, 
25.—CoveEs, Key N. Am. Birds, 2d ed., 1884, 748. 
[Rissa] tridactyla Licurenstein, Nom. Av. Mus. Berol., 1854, 99.—Bonaparte, 
Compt. Rend., xlii, 1856, 771.—Gray, Hand-list, iii, 1871, 117, no. 11017.— 
Forses and Rosinson, Bull. Liverp. Mus., ii, no. 2, 1899, 58, part. 
[Rissa] tridactylus Brucu, Journ. fiir Orn., 1853, 103 (monogr.); 1855, 284 (monogr.). 
—BonaparteE, Consp. Av., ii, 1857, 225. 
Rissa tridactylus HarteRT and Grant, Novit. Zool., xii, 1905, 102 (San Miguel, 
Azores). 
[Rissa tridactyla] a. tridactyla Batrp, Brewer, and Ripeway, Water Birds N. 
Am., ii, 1884, 202. 
Rissa tridactyla tridactyla Hanrzscu, Journ. fir Orn., July, 1908, 321 (Labrador). 
AMERICAN ORnITHOLOGISTS’ Union, Check List, 3d ed., 1910, 35.—(?) THAYER 
and Banes, Proc. New Engl. Zool. Club, v, 1914, 9, in text (Chuan Bay, 
e. Siberia, breeding).—Cooxe, Bull. 292, U. 8. Dept. Agric. (Biol. Surv.), 
1915, 16, fig. 6 (range and migrations). 
Larus (Rissa) tridactylus Droste, Vogelw. Borkum, 1869, 344.—Hzvetin, Journ. 
fir Orn., 1872, 125 (Arctic Europe).—Covuss, Birds Northwest, 1874, 644. 
Rissa trydactila Couns, Proc. Ac. Nat. Sci. Phila., 1861, 247 (Eskimo Bay, Labra- 
dor, Aug.). 
Xema tridactylum JauBERT and BarTHELEMY-LAPOMMERAYE, Rich. Orn. Fr., 
1859, 393. 
[Larus] rissa Brttnnicu, Orn. Bor., 1764, 42 (Iceland and Christiansoe Island, Nor- 
way; occurs also near Hafnia).—Linnavs, Syst. Nat., ed. 12, i, 1766, 224. 
Larus rissa Putprs, Voy. North Pole, App., 1774, 187—Brcustein, Naturg. 
Deutschl., ii, 1791, 804.—Lzacu, Syst. Cat. Brit. Mus., 1816, 40; in J. Ross’s 
Voy. Baffin Bay, 8vo ed., ii, App., 1819, 159.—ScorxsBy, Arctic Voy., i, 1820, 
534.—Fiemine, Brit. Anim., 1828, 141—Serxpy, Brit. Birds, ii, 1833, 493, 
_pl. 94.—Goutp, Birds Europe, v, 1837, pl. 435 and text.—Mzyer, Brit. 
Birds, vii, 1857, 189, pl. 305.—Hux ry, Proc. Zool. Soc. Lond., 1867, 430, 
fig. 2 (skull). 
Rissa rissa SHARPE, Hand-list, i, 1899, 143, part. 
Rissa rissa rissa ScHaLow, Vogel der Arktis, 1904, 138 (synonymy, range, ate Ne 
Laroides rissa Breum, Vég. Deutschl., 1831, 755. 
[Larus] nevius Linnaus, Syst. Nat., ed. 12, i, 1766, 225 (Europe).—ScHAFFER, 
Mus. Orn., 1789, 64. 
Larus albus (not of Gunnerus, 1767) Mixer, Natursystems, Suppl., 1776, 108 
(based on Mouette cendrée tachetée Brisson, Orn., vi, 1760, 185, pl. 17, fig. 2). 
Larus cinerarius (not of Linnsus) Fasricius, Fauna Groenlandica, 1780, 101 
(=winter plumage). 
[Larus] riga Gein, Syst. Nat., i, pt. ii, 1789, 594 (Boreal America, Europe, and 
Asia; founded on Larus rissa Briinnich, Orn. Bor., 1764, 42, no. 140, etc.). 
