_Cleptornis palauensis_ Reichenow, Journ. f. Ornith., 1915, p. 125.
(Type locality, Babeldzuap = Babelthuap, Palauinseln.)
_Megazosterops palauensis_ Stresemann, Ornith. Monatsber., 38,
1930, p. 159 (Baobeltaob); Snouckaert, Alauda (2), 3, 1931, p. 26
(Palau); Stresemann, Mitt. Zool. Mus. Berlin, 17, 1931, p. 235
(Baobel Taob = Babelthuap); Mathews, Ibis, 1931, p. 48 (Palau);
Hand-list Japanese Birds, rev., 1932, p. 172 (Palau); Yamashina,
Tori, 10, 1940, p. 674 (Palau); Hand-list Japanese Birds, 3d ed.,
1942, p. 191 (Babelthuap, Peleliu).
_Rukia palauensis_ Mayr, Amer. Novit., no. 1269, 1944, p. 7
(Palau); _idem_, Birds Southwest Pacific, 1945, pp. 294, 300
(Peliliu); Baker, Smithson. Misc. Coll., vol. 107, no. 15, 1948,
pp. 67, 74 (Peleliu).
_Geographic range._--Micronesia: Palau Islands-Babelthuap, Peleliu.
_Characters._--Adult: A large white-eye with upper parts near
"Saccardo's olive" (some individuals darker brown), head and neck
more olivacious, rump browner; auriculars blackish with pale
yellow streaks; narrow supra-orbital stripe pale olive; orbital
ring indistinct; underparts near "olive lake," chin lighter, under
tail-coverts light yellowish-brown; wing and tail feathers dark
brown, except for tawny outer edges and whitish inner edges;
maxilla horn-color; mandible yellowish to tawny; feet tawny; iris
grayish-brown.
_Measurements._--Measurements of _Rukia_ are listed in table 52.
Measurements of males and females are comparable within the same
species.