_Sterna pileata_ Scopoli, Del. Flor. et Faun. Insubr., fasc. 2, 1786, p. 92. (No type locality = Philippines, _ex._ Sonnerat.) _Sterna stolida_ Chamisso, in Kotzebue's Voy. "Rurick," 3, 1821, pp. 150, 157 (Marshall Islands); Kittlitz, Kupfertaf. Naturgesch. Vögel, 3, 1833, p. 27, pl. 36, fig. 1 (Mordloks-Inseln); _idem_, Obser. Zool., in Lutké, Voy. "Le Séniavine," 3, 1836, pp. 286, 299, 308, 309 (Ualan, Lougounor, Ouleai); _idem_, Denkw. Reise russ. Amer. Micron. und Kamchat., 1, 1858, p. 364, 2, pp. 77, 86 (Ualan); Wiglesworth, Ibis, 1893, p. 212 (Marshalls). _Anous stolidus_ Hartlaub, Archiv f. Naturgesch., 18, 1852, p. 137 (Mortlock); _idem_, Journ. f. Ornith., 1854, p. 168 (Carolinen); Gray, Cat. Birds Trop. Is. Pacific Ocean, 1859, p. 59 (Carolines); Finsch and Hartlaub, Fauna Centralpolynesiens, 1867, p. 236 (Mordlocks, Puynipet = Ponapé); Hartlaub and Finsch, Proc. Zool. Soc. London, 1868, pp. 9, 118 (Pelew); _idem_, Proc. Zool. Soc. London, 1872, pp. 90, 112 (Pelew); Finsch, Journ. Mus. Godeffroy, 8, 1875, pp. 6, 42 (Palau); _idem_, Journ. Mus. Godeffroy, 12, 1876, pp. 18, 40 (Ponapé); _idem_, Proc. Zool. Soc. London, 1877 (1878), p. 781 (Ponapé); _idem_, Journ. f. Ornith., 1880, pp. 295, 307 (Ponapé, Ruck, Kuschai); _idem_, Proc. Zool. Soc. London, 1880, p. 577 (Ruk, Ponapé, Kuschai); _idem_, Ibis, 1881, pp. 105, 109, 115, 246, 247 (Kuschai, Ponapé); Schmeltz and Krause, Ethnogr. Abth. Mus. Godeffroy, 1881, pp. 299, 330, 353 (Mortlock, Nukuor, Ruk); Salvadori, Ornith. Papuasia, 3, 1882, p. 455 (Pelews, Carolines, Marshalls); Finsch, Mitth. Ornith. Ver. Wien, 1884, p. 51 (Jaluit, Ponapé); Wiglesworth, Abhandl. und Ber. Zool. Mus. Dresden, no. 6, 1890-1891 (1891), p. 76 (Pelew, Mortlock, Ruk, Nukuor, Ponapé, Ualan, Marshalls); Saunders, Cat. Birds British Museum, 25, 1896, p. 136 (Pelew, Carolines, Marshalls); Oustalet, Nouv. Arch. Mus. Hist. Nat. Paris, (3), 8, 1896, p. 59 (Saypan, Guam, Rota, Agrigan, Hogoleu = Truk, Kushai, Ponapi, Marshalls); Hartert, Novit. Zool., 5, 1898, p. 68 (Guam); Seale, Occ. Papers Bernice P. Bishop Mus., 1, 1901, p. 21 (Guam); Safford, Osprey, 1902, p. 66 (Mariannas); Bryan, Occ. Papers Bernice P. Bishop Mus., 2, 1903, p. 101 (Guam); Schnee, Zool. Jahrbücher, 20, 1904, p. 390 (Marshall-Inseln); Safford, The Plant World, 7, 1904, p. 267 (Guam); _idem_, Contr. U. S. Nat. Herb., 9, 1905, p. 80 (Guam); Prowazek, Die deutschen Marianen, 1913, p. 100 (Marianen); Takastukasa and Kuroda, Tori, 1, 1915, p. 51 (Ponapé, Ruk); Cox, Island of Guam, 1917, p. 22 (Guam); Uchida, Annot. Zool. Japon., 9, 1918, pp. 484, 488 (Palau, Ponapé); Wharton, Ecol. Monogr., 16, 1946, p. 174 (Guam); Wharton and Hardcastle, Journ. Parasitology, 32, 1946, pp. 292, 296, 306 (Guam, Ulithi).