_Astur (Nisus) gularis_ Temminck and Schlegel, in Siebold, Fauna Japon., Aves, 1845, p. 5, pl. 2. (Type locality, Japan.) _Accipiter nisoides_ Oustalet, Nouv. Arch. Mus. Hist. Nat. Paris, (3), 7, 1895, p. 166 (Guam); Hartert, Novit. Zool., 5, 1898, p. 51 (Marianne); Seale, Occ. Papers Bernice P. Bishop Mus., 1, 1901, p. 44 (Guam); Safford, Osprey, 1902, p. 70 (Marianas). _Accipiter gularis_ Kuroda, in Momiyama, Birds Micronesia, 1922, p. 39 (Guam). _Accipiter virgatus gularis_ Hand-list Japanese Birds, rev., 1932, p. 182 (Guam); Hand-list Japanese Birds, 3d ed., 1942, p. 203 (Guam); Mayr, Birds Southwest Pacific, 1945, p. 302 (Micronesia). _Accipiter virgatus nisoides_ Bryan, Guam. Rec., vol. 13, no. 2, 1936, p. 15 (Guam). _Geographic range._--Breeds in Japan and northern China. Winters south to Philippines and Malaysia. In Micronesia: Mariana Islands--Guam. _Remarks._--Oustalet (1895:166) records a male bird shot by Marche at Guam in October, 1887. Seale (1901:44) records a specimen taken at Guam by Owston's Japanese collectors. These are the only records found for Micronesia, and the hawk may be classed as a casual winter visitor. Strophlet (1946:535) observed "a small light-throated" falcon at Guam on November 7, 1945, which may have been of this species. =Pandion haliaetus melvillensis= Mathews Osprey _Pandion haliaëtus melvillensis_ Mathews, Australian Avium Rec., 1, 1912, p. 34. (Type locality, Melville Island.) _Pandion leucocephalus_ Finsch, Journ. Mus. Godeffroy, 8, 1875, p. 49 (Palau). _Pandion haliaetus leucocephalus_ Wiglesworth, Abhandl. und Ber. Zool. Mus. Dresden, no. 6, 1890-1891 (1891), p. 1 (Pelew). _Pandion haliaëtus cristatus_ Kuroda, in Momiyama, Birds Micronesia, 1922, p. 40 (Pelew); Hand-list Japanese Birds, rev., 1932, p. 182 (Pelew); Hand-list Japanese Birds, 3d ed., 1942, p. 203 (Palau). _Pandion haliaëtus melvillensis_ Mayr, Birds Southwest Pacific, 1945, pp. 55, 286 (Palau); Baker, Smithson. Misc. Coll., vol. 107, no. 15, 1948, p. 46 (Guam, Palau). _Geographic range._--Malaysia, northern Australia, Melanesia. In Micronesia: Mariana Islands--Guam; Palau Islands--Peleliu.