_Zosterops semperi owstoni_ Hartert, Novit., Zool., 7, 1900, p. 2.
(Type locality, Ruk.)
_Zosterops semperi semperi_ Finsch (part), Journ. f. Ornith.,
1880, p. 287 (Ruck); _idem_ (part), Proc. Zool. Soc. London, 1880,
p. 575 (Ruk); _idem_ (part), Ibis, 1881, p. 110 (Ruk); Schmeltz
and Krause (part), Ethnogr. Abth. Mus. Godeffroy, 1881, p. 353
(Ruk); Gadow (part), Cat. Birds British Mus., 9, 1884, p. 183
(Central Carolines=Truk); Wiglesworth (part), Abhandl. und Ber.
Zool. Mus. Dresden, no. 6, 1890-1891 (1891), p. 37 (Ruk); Oustalet
(part), Nouv. Arch. Mus. Hist. Nat. Paris, (3), 7, 1895, p. 208
(Ruk); Hartert (part), Novit. Zool., 5, 1898, p. 57 (Ruk);
Nehrkorn, Kat. Eiers, 1899, p. 80 (Ruk).
_Zosterops semperi owstoni_ Dubois, Syn. Avium, 1, 1902, p. 710
(Ruk); Wetmore, in Townsend and Wetmore, Bull. Mus. Comp. Zoöl.,
63, 1919, p. 223 (Truk); Momiyama, Birds Micronesia, 1922, p. 24
(Ruk); Kuroda, in Momiyama, Birds Micronesia, 1922, p. 75 (Ruk);
Mathews, Syst. Avium Australasianarum, 2, 1930, p. 705 (Ruk);
Takatsukasa and Yamashina, Dobutsu. Zasshi, 43, 1931, p. 496 (Ruk);
Yamashina, Tori, 7, 1932, p. 400 (Truk); Hand-list Japanese Birds,
rev., 1932, p. 174 (Truk).
_Zosterops owstoni_ Finsch, Das Tierreich, no. 15, 1901, p. 31
(Ruk); Matschie (part), Journ. f. Ornith., 1901, pp. 112, 113
(Ruck); Reichenow, Die Vögel, 2, 1914, p. 470 (Karolinen = Truk);
Takatsukasa and Kuroda, Tori, 1, 1915, pp. 55, 64 (Ruk).
_Zosterops conspicillata owstoni_ Stresemann, Mitt. Zool. Mus.
Berlin, 17, 1931, p. 277 (Truk); Hand-list Japanese Birds, 3d ed.,
1942, p. 193 (Truk); Mayr, Amer. Mus. Novit., no. 1269, 1944, p. 7
(Truk); _idem_, Birds Southwest Pacific, 1945, p. 299 (Truk);
Baker, Smithson. Misc. Coll., vol. 107, no. 15, 1948, pp. 73, 74
(Truk).
_Geographic range._--Micronesia: Caroline Islands--Truk.
_Characters._--Adult: Resembles adult of _Z. c. semperi_, but
upper parts darker olive and less yellowish-green; fronto-loral
band deeper yellow; auriculars slightly darker; black line on
lores and under eye more distinct; underparts deeper yellow;
abdomen with greenish tinges. Resembles adult of _Z. c. rotensis_,
but upper parts duller, more green and less yellow; fronto-loral
band lighter and less distinct, coloring near that of _Z. c.
semperi_; auriculars darker green; underparts slightly darker,
more olive-green and less yellow.
_Measurements._--Measurements are listed in table 50.
_Specimens examined._--Total number, 23 (12 males, 10 females, 1
unsexed), as follows: Caroline Islands, USNM--Truk, 3 (Feb. 16);
AMNH--Truk, 20 (Feb., March, May, Nov.).
_Nesting._--Yamashina (1932a:400) records the taking of a nest with
one egg at Truk in May. Hartert (1900:2) records nests containing
single eggs taken at Truk from May to July. Nests were found in
bushes and trees four to eight feet above the ground. The eggs are
pale blue. He gives measurements of seven eggs.
_Remarks._--Kubary obtained the first specimens of the Bridled White-eye
at Truk. Hartert described the population as a new subspecies using
material taken by Owston's collectors. The bird was named in honor of
Alan Owston. McElroy of the NAMRU2 party visited Truk in December, 1945.
He found this white-eye in the mountainous areas at Moen and Udot
islands.
=Zosterops conspicillata takatsukasai= Momiyama