============================+=====+==================== SUBSPECIES | No. | Wing ----------------------------+-----+-------------------- _Collocalia i. inquieta_ | 11 | 119 (116-125) | | _Collocalia i. ponapensis_ | 10 | 110 (107-114) | | _Collocalia i. rukensis_ | | (112-119.5)[C] ----------------------------+-----+-------------------- [C] (Mayr, 1935:3). =Collocalia inquieta rukensis= Kuroda Carolines Swiftlet _Collocalia fuciphaga rukensis_ Kuroda, Tori, 1, 1915, pp. 58, 59, pl. 3, fig. 1. (Type locality, Ruk.) _Collocalia vanicorensis_ Finsch (part), Proc. Zool. London, 1880, p. 575 (Ruk); Schmeltz and Krause, Ethnogr. Abth. Mus. Godeffroy, 1881, p. 353 (Ruk); Wiglesworth, Abhandl. und Ber. Zool. Mus. Dresden, no. 6, 1890-1891 (1891), p. 18 (Uap and Ruk); Hartert, Novit. Zool., 7, 1900, p. 11 (Ruk); Matschie, Journ. f. Ornith., 1901, p. 112 (Yap, Ruk). _Collocalia fuciphaga vanikorensis_ Oberholser (part), Proc. U. S. Nat. Mus., 42, 1912, p. 20 (Uala = Truk). _Collocalia fuciphaga rukensis_ Takatsukasa and Kuroda, Tori, 1, 1915, p. 53 (Ruk); Kuroda, in Momiyama, Birds Micronesia, 1922, p. 62 (Ruk, Yap); Kuroda, Ibis, 1927, p. 706 (Truk); Mathews, Syst. Avium Australasianarum, 1, 1927, p. 402 (Ruk); Hand-list Japanese Birds, rev., 1932, p. 178 (Ruk). _Collocalia fuciphaga inquieta_ Kuroda, in Momiyama, Birds Micronesia, 1922, p. 62 (Ruk). _Collocalia inquieta rukensis_ Mayr, Amer. Mus. Novit., no. 915, 1937, p. 11 (Ruk); Peters, Check-list Birds World, 4, 1940, p. 225 (Truk, Yap); Mayr, Birds Southwest Pacific, 1945, p. 292 (Yap, Truk). _Collocalia vanikorensis rukensis_ Hand-list Japanese Birds, 3d ed., 1942, p. 198 (Truk, Yap). _Geographic range._--Micronesia: Caroline Islands--Truk, Yap. _Characters._--Adult: Resembles _C. i. inquieta_ but with wing shorter. _Measurements._--Measurements are given in table 31. _Specimen examined._--One unsexed bird from Caroline Islands, USNM--Truk (Feb. 16). _Remarks._--Little is known concerning this swiftlet. The bird at Yap is referred to this race; I have not seen specimens from this island. McElroy reports seeing no swiftlets at Truk in December, 1945. _C. i. rukensis_ appears to be intermediate in size between _C. i. inquieta_ and _C. i. ponapensis_. Richards writes (_in litt._) that he found swiftlets common at Truk in 1948. He also noted a large swiftlike bird in "January or February," 1948, near the summit of Mount Tonáchian on Moen Island. From his description, the bird may have been a large migratory swift, possibly _Apus pacificus_ or _Chaetura caudacuta_, neither of which have been reported previously from Micronesia. =Collocalia inquieta ponapensis= Mayr Carolines Swiftlet