Kubaryum oleaginus Momiyama, Birds Micronesia, 1922, p. 1 (Yap); Kuroda, in Momiyama, Birds Micronesia, 1922, p. 77 (Yap).
Kubaryum oleagineum Mathews, Syst. Avium Australasianarum, 2, 1930, p. 712 (Yap).
Rukia oleaginea Mayr, Amer. Mus. Novit., no. 1269, 1944, p. 7 (Yap); idem, Birds Southwest Pacific, 1945, p. 300 (Yap).
Geographic range.—Micronesia: Caroline Islands—Yap.
Characters.—According to Hartlaub and Finsch (1872:95), "General colour a deep oil-green, with a decided fulvous hue; underparts a little paler, and a little more yellowish; eye-ring satin-white; ears blackish; upper and under tail coverts with a slight rufous tinge; wing- and tail-feathers blackish, with oil-green margins; under wing-coverts whitish-grey; beak fulvous, under mandible, except at the tip, yellowish; feet pale, probably yellow; iris reddish white."
Remarks.—No specimens of R. oleaginea have been examined by me, and I am following Mayr (1944b:7) in including it with the other large white-eyes of Micronesia in the genus Rukia.
Rukia ruki (Hartert)
Truk Greater White-eye
Tephras ruki Hartert, Bull. British Ornith. Club, 7, 1897, p. 5. (Type locality, Ruk.)
Tephras ruki Hartert, Ibis, 1898, p. 144 (Ruk); idem, Novit. Zool., 7, 1900, p. 3 (Ruk); Matschie, Journ. f. Ornith., 1901, pp. 111, 112, 113 (Ruck); Mathews, Syst. Avium Australasianarum, 2, 1930, p. 712 (Ruk).