_Collocalia vanikorensis ponapensis_ Mayr, Amer. Mus. Novit., no. 820, 1935, p. 3. (Type locality, Ponapé.) _Collocalia vanicorensis_ Finsch (part), Journ. Mus. Godeffroy, 12, 1876, pp. 17, 23 (Ponapé); _idem_, Proc. Zool. Soc. London, 1877 (1878), p. 778 (Ponapé); _idem_ (part), Journ. f. Ornith., 1880, p. 285 (Ponapé); _idem_, Ibis, 1881, p. 115 (Ponapé); Wiglesworth (part), Abhandl. und Ber. Zool. Mus. Dresden, no. 6, 1890-1891 (1891), p. 18 (Ponapé); Matschie (part), Journ. f. Ornith., 1901, p. 112 (Ponapé). _Collocalia fuciphaga_ Hartert, Cat. Birds British Mus., 16, 1892, p. 498 (Ponapé). _Collocalia fuciphaga vanikorensis_ Takatsukasa and Kuroda, Tori, 1, 1915, p. 53 (Ponapé). _Collocalia fuciphaga inquieta_ Kuroda (part), in Momiyama, Birds Micronesia, 1922, p. 62 (Ponapé). _Collocalia vanikorensis ponapensis_ Mayr, Amer. Mus. Novit., no. 828, 1936, p. 12 (Ponapé); Hand-list Japanese Birds, 3d ed., 1942, p. 198 (Ponapé). _Collocalia inquieta ponapensis_ Mayr, Amer. Novit., no. 915, 1937, p. 11 (Ponapé); Peters, Check-list Birds World, 4, 1940, p. 225 (Ponapé); Mayr, Birds Southwest Pacific, 1945, p. 292 (Ponapé). _Collocalia inquieta_ Mayr, Proc. 6th Pac. Sci. Congr., 4, 1941, p. 204 (Ponapé). _Geographic range._--Micronesia: Caroline Islands--Ponapé. _Characters._--Adult: According to Mayr (1936:12), "Very similar to _inquieta_, but much smaller; on the upper parts apparently somewhat less glossy, and not so dark, more brownish; under parts very variable, sometimes very dark (partly on account of greasing), sometimes quite silvery on the throat; very dark specimens show some greenish gloss not only on the longest under tail-coverts, but also on the entire under side, except on the throat; rump of the same color as the back; tarsus unfeathered." _Measurements._--Measurements are listed in table 31. _Specimens examined._--Total number, 37 (19 males, 18 females) from Caroline Islands, AMNH--Ponapé (Nov., Dec.). _Nesting._--Coultas obtained young birds from nests in caves in November and December. _Remarks._--I am following Mayr (1937:11) and Peters (1940:225) in this treatment of these Caroline swiftlets, even though the differences between _C. inquieta_ and _C. vanikorensis_ appear to be slight indeed. _C. inquieta_ appears closest to the forms of _C. vanikorensis_ in Northern Melanesia. The birds found in New Guinea and the Solomons are similar in size to the birds in the Carolines, while those in the Moluccas, Admiralties and Lihir are larger. Color differences are slight with the pale color of the sides of the head and underparts being variable. All of these dark-rumped birds evidently evolved in the Melanesian area. =Halcyon cinnamomina cinnamomina= Swainson Micronesian Kingfisher