_Remarks._--This swallow is a winter migrant to western Micronesia from Asia. In the Palau Islands in September, 1945, the NAMRU2 party saw the swallow at Ngesebus and Angaur in small flocks. At Guam, the NAMRU2 party saw one bird on October 7 and four birds flying near Agaña River on October 11. Strophlet (1946:535) saw one bird on October 28, 1945, and six birds on November 16 at Guam. Marshall (1949:221) found swallows at Tinian, Saipan and Palau from October to February. He found only immature birds. =Edolisoma tenuirostre monachum= (Hartlaub and Finsch) Cicada Bird _Campephaga monacha_ Hartlaub and Finsch, Proc. Zool. Soc. London, 1872, p. 99. (Type locality, Pelew Islands.) _Volvocivora monacha_ Finsch, Journ. Mus. Godeffroy, 8, 1875, pp. 4, 19, pl. 3, fig. 2-3 (Palau); _idem_, Journ. Mus. Godeffroy, 12, 1876, p. 28 (Palau); Schmeltz and Krause, Ethnogr. Abth. Mus. Godeffroy, 1881, p. 407 (Palau). _Lalage monacha_ Sharpe, Cat. Birds British Mus., 4, 1879, p. 105 (Pelew); Tristram, Cat. Birds, 1889, p. 186 (Pelew); Wiglesworth, Abhandl. und Ber. Zool. Mus. Dresden, no. 6, 1890-1891 (1891), p. 25 (Pelew); Bolau, Mitteil. Naturhist. Mus. Hamburg, 1898, p. 53 (Palau); Matschie, Journ. f. Ornith., 1901, pp. 112, 113 (Palau); Dubois, Syn. Avium., 1, 1902, p. 303 (Pelew); Reichenow, Die Vögel, 2, 1914, p. 276 (Palau); Takatsukasa and Kuroda, Tori, 1, 1915, p. 54 (Pelew); Kuroda, in Momiyama, Birds Micronesia, 1922, p. 68 (Pelew); Hand-list Japanese Birds, rev., 1932, p. 175 (Palau); Hand-list Japanese Birds, 3d ed., 1942, p. 194 (Babelthuap, Koror). _Edolisoma monacha_ Mathews, Syst. Avium Australasianarum, 2, 1930, p. 541 (Pelew). _Edolisoma tenuirostre monacha_ Stresemann, Ornith. Monatsber., 47, 1939, p. 126 (Palau); Mayr, Birds Southwest Pacific, 1945, p. 294 (Palau); Baker, Smithson. Misc. Coll., vol. 107, no. 15, 1948, p. 65 (Peleliu). _Geographic range._--Micronesia: Palau Islands--Babelthuap, Koror, Peleliu. _Characters._--Adult male: Forehead, crown, nape, back, and underparts near "Tyrian blue"; auriculars darker than back; lores and chin black; throat black washed with blue gray; wing feathers black, margined with pale blue; black tail tipped with whitish, and basal part of middle two rectrices colored like back; under wing dark except for whitish inner margins of secondaries; bill and feet black; iris dark brown.