_Halcyon cinnamomina_ Swainson, Zool. Illustr., 2, 1821, text to pl. 67. (No type locality = Guam.) _Halcyon cinnamomina_ Hartlaub, Journ. f. Ornith., 1854, p. 167 (Marianen = Guam); Gray, Cat. Birds Trop. Is. Pacific Ocean, 1859, p. 5 (Ladrone or Marian Islands = Guam); Sharpe (part), Monogr. Alced., 1868-71, pp. xxxii, 213, pl. 80 (Guam); Gray, Hand-list Birds, 1, 1869, p. 93 (Mariannes = Guam); Oustalet, Le Nat., 1889, p. 260 (Mariannes = Guam); Wiglesworth, Abhandl. und Ber. Zool. Mus. Dresden, no. 6, 1890-1891 (1891), p. 16 (Guam); Oustalet, Nouv. Arch. Mus. Hist. Nat. Paris, (3), 7, 1895, p. 175 (Guam); Hartert, Novit. Zool., 5, 1898, p. 53 (Guam); Matschie, Journ. f. Ornith., 1901, pp. 112, 113, 114 (Guam); Wharton, Ecol. Monogr., 16, 1946, p. 174 (Guam); Strophlet, Auk, 63, 1946, p. 538 (Guam); Baker, Condor, 49, 1947, p. 125 (Guam). _Alcedo ruficeps_ Dumont, Dict. Sci. Nat., 29, 1823, p. 273 (Mariannes = Guam); Pucheran, Rev. et Mag. de Zool., 1853, p. 387 (Mariannes = Guam); Hartlaub, Journ. f. Ornith., 1855, p. 423 (Mariannen = Guam). _Dacela ruficeps_ Lesson, Traité d'Ornith., 1831, p. 247 (Mariannes = Guam). _Halcyon cinnamomeus_ Kittlitz, Obser. Zool., in Lutké, Voy. "Le Séniavine," 3, 1836, p. 304 (Guahan). _Dacelo cinnamomina_ Kittlitz, Denkw. Reise russ. Amer. Micron. und Kamchat., 2, 1858, p. 131 (Guahan); Schlegel, Mus. Pays-Bas, 3, no. 17, 1863, p. 39; no. 39, 1874, p. 29 (Mariannes = Guam); Giebel, Thes. Ornith., 2, 1875, p. 3 (Mariannae = Guam). _Todiramphus cinnamominus_ Cassin, U. S. Expl. Exped. 1838-'42, 1858, pp. 220, 225 (Ladrone or Marianna Islands = Guam). _Sauropatis cinnamomina_ Cabanis, Mus. Hein., 2, 1859-'60, p. 159 (Marianen); Salvadori (part), Ornith. Papuasia, 1, 1880, p. 481 (Marianne = Guam). _Halcyon cinnamominus_ Finsch (part), Journ. Mus. Godeffroy, 12, 1876, pp. 17, 20 (Marianen = Guam); Sharpe, Cat. Birds British Mus., 17, 1892, p. 259 (Marianne = Guam); Seale, Occ. Papers Bernice P. Bishop Mus., 1, 1901, p. 45 (Guam); Safford, Osprey, 1902, p. 69 (Guam); Dubois, Syn. Avium, 1, 1902, p. 108 (Guam); Safford, The Plant World, 7, 1904, p. 263 (Guam); _idem_, Contr. U. S. Nat. Herb., 9, 1905, p. 79 (Guam); Mearns, Proc. U. S. Nat. Mus., 36, 1909, p. 476 (Guam); Reichenow, Die Vögel, 2, 1914, p. 116 (Marianen = Guam); Takatsukasa and Kuroda, Tori, 1, 1915, p. 63 (Mariannes = Guam); Cox, Islands of Guam, 1917, p. 21 (Guam); Thompson, Guam and its people, 1942, p. 23 (Guam). _Halcyon rufigularis_ Sharpe, Cat. Birds British Mus., 17, 1892, p. 260 (No type locality = Guam). _Halcyon cinnamanea_ Wheeler, Report Island of Guam, 1900, p. 12 (Guam). _Halcyon cinnamonius_ Prowazek, Die deutschen Marianen, 1913, p. 102 (Marianen = Guam).