_Cypselus inquietus_ Kittlitz, Obser. Zool., in Lutké, Voy. "Le
Séniavine," 3, 1836, p. 285. (Type locality, Ualan.)
_Cypselus inquietus_ Kittlitz (part), Denkw. Reise russ. Amer.
Micron. und Kamchat., 2, 1858, p. 26 (Ualan).
_Collocalia ualensis_ Streubel, Isis, 1848, p. 368 (no type
locality = Kusaie?).
_Collocalia nidifica ualensis_ Gray, Ann. Nat. Hist., 17, 1866, p.
123 (Caroline Islands = Kusaie?).
_Collocalia vanicorensis_ Finsch (part), Journ. Mus. Godeffroy,
12, 1876, p. 24 (Ualan); _idem_ (part), Proc. Zool. Soc. London,
1880, p. 575 (Kuschai); _idem_ (part), Journ. f. Ornith., 1880,
pp. 285, 298 (Kuschai); _idem_ (part), Ibis, 1881, pp. 104, 108
(Kushai); Wiglesworth (part), Abhandl. und Ber. Zool. Mus.
Dresden, no. 6, 1890-1891 (1891), p. 18 (Ualan); Matschie (part),
Journ. f. Ornith., 1901, p. 112 (Ualan).
_Collocalia fuciphaga_ Hartert (part), Cat. Birds British Mus.,
16, 1892, p. 498 (Kuschai); Oustalet (part), Nouv. Arch. Mus.
Hist. Nat. Paris, (3), 7, 1895, p. 190 (Oualan).
_Collocalia fuciphaga fuciphaga_ Oberholser (part), Proc. Acad.
Nat. Sci. Phila., 1906, p. 186 (Ualan).
_Collocalia fuciphaga vanikorensis_ Oberholser (part), Proc. U. S.
Nat. Mus., 42, 1912, p. 20 (Kusaie).
_Collocalia fuciphaga inquieta_ Stresemann, Verhandl. Ornith.
Gesellsch. Bayern, 12, 1914, pp. 9, 11 (Ualan); Kuroda (part), in
Momiyama, Birds Micronesia, 1922, p. 62 (Kusaie); Hand-list
Japanese Birds (part), rev., 1932, p. 179 (Kusaie).
_Collocalia inquieta inquieta_ Mayr, Amer. Mus., Novit., no. 915,
1937, p. 11 (Kusaie); Peters, Check-list Birds World, 4, 1940, p.
225 (Kusaie); Mayr, Birds Southwest Pacific, 1945, p. 292
(Kusaie).
_Collocalia vanikorensis inquieta_ Hand-list Japanese Birds, 3d
ed., 1942, p. 199 (Kusaie).
_Geographic range._--Micronesia: Caroline Islands--Kusaie.
_Characters._--Adult: Upper parts dark (sooty-black) with a slight
greenish gloss on head and back and a more conspicuous
bluish-purple gloss on the wings and tail; feathers of lores
white, tipped with black; underparts smoky-gray; feet brownish;
bill black; iris dark brown.
_Measurements._--Measurements are presented in table 31.
_Specimens examined._--Total number, 42 (21 males, 20 females, 1
unsexed), as follows: Caroline Islands, USNM--Kusaie, 1 (Feb. 8);
AMNH--Kusaie, 41 (Jan., Feb., March).
_Remarks._--Kittlitz obtained this swiftlet when he visited Kusaie from
December 8, 1827, to January 1, 1828. In 1931, Coultas found the bird
common at Kusaie. The name _Collocalia ualensis_, published by Streubel
in Isis in 1848, p. 368, is without mention of a locality, but is later
used by Gray to denote the swiftlet in the Caroline Islands.