_Fregata aquila_ Salvadori, Ornith. Papuasia, 3, 1882, p. 403 (Carolines, Marshalls); Wiglesworth, Abhandl. und Ber. Zool. Mus. Dresden, no. 6, (1890-1891), p. 71 (Ruk, Luganor, Ponapé, Ualan, Marshalls); Ogilvie-Grant, Cat. Birds British Mus., 26, 1898, p. 443 (Carolines, Marshalls); Finsch, Deut. Ver. zum Schultze der Vogelwelt, 25, 1900, p. 452 (Ponapé, Kuschai, Marshalls); Seale, Occ. Papers Bernice P. Bishop Mus., 1, 1901, p. 24 (Guam); Safford, The Plant World, 7, 1904, p. 267 (Guam); Schnee, Zool. Jahrbücher, 20, 1904, p. 390 (Marschall Inseln); Safford, Contr. U. S. Nat. Herb., 9, 1905, p. 80 (Guam); Cox, Island of Guam, 1917, p. 22 (Guam). _Fregata aquila palmerstoni_ Kuroda, in Momiyama, Birds Micronesia, 1922, p. 35 (Carolines, Marshalls). _Fregata minor peninsulae_ Mathews, Syst. Avium Australasianarum, 1, 1927, p. 233 (Carolines, Marshalls); Peters, Check-list Birds World, 1, 1931, p. 96 (Carolines?, Marshalls?). _Fregata minor palmerstoni_ Hand-list Japanese Birds, rev., 1932, p. 186 (Yap, Faraulep, Truk, Lukunor, Ponapé, Kusaie, Namu, Likieb); Bryan, Guam Rec., vol. 13, no. 2, 1936, p. 15 (Guam); Yamashina, Tori, 10, 1940, p. 676 (Maug, Bikar). _Fregata minor minor_ Hand-list Japanese Birds, 3d ed., 1942, p. 207 (Maug, Yap, Faraulep, Truk, Lukunor, Ponapé, Kusaie, Namu, Bikar, Likieb). _Fregata minor_ Borror, Auk, 64, 1947, p. 416 (Agrihan). _Geographic range._--Eastern Indian Ocean to western Pacific Ocean. Limits of range not certainly known. In Micronesia: Mariana Islands--Agrigan, Maug, Saipan, Guam; Caroline Islands--Yap, Faraulep, Truk, Lukunor, Ponapé, Kusaie; Marshall Islands--Namu, Bikar, Likieb, Kwajalein, Bikini. _Characters._--Adult male: Large sea bird with deeply forked tail; blackish but wing-coverts paler; head and back glossy purple and blue; breast lighter than belly. Adult female: Resembles adult male, but head blacker; chin and throat grayer; breast more whitish. Immature: Resembles adult, but head and throat whitish washed with buff; breast dark brown; belly whitish. _Measurements._--Two adult males measure: wing, 572; tail, 354, 396; exposed culmen, 98, 103; two adult females; wing, 583, 604; tail, 365; exposed culmen, 119, 127. These four specimens are from Bikini. _Specimens examined._--Total number, 10 (3 males, 7 females), from Marshall Islands, USNM--Bikini (March 11, 22, 29, 30, April 13, 29, May 3, 14). _Remarks._--The systematic position of the subspecies of _Fregata minor_ in the Pacific area is not well established. I am following the committee who prepared the Hand-list of Japanese Birds (Hachisuka _et al._, 1942:207) in using the name _F. m. minor_, although a thorough study may show that these birds have closer relationships to one of the other subspecies of the Pacific area.