_Zosterops semperi rotensis_ Takatsukasa and Yamashina, Dobutsu.
Zasshi, 43, 1931, p. 486. (Type locality, Rota.)
_Zosterops semperi_ Oustalet (part), Nouv. Arch. Mus. Hist. Nat.
Paris, (3), 7, 1895, p. 207 (Rota); Hartert (part), Novit. Zool.,
5, 1898, p. 57 (Rota); Finsch (part), Das Tierreich, no. 15, 1901,
p. 30 (Rota); Seale (part), Occ. Papers Bernice P. Bishop Mus., 1,
1901, p. 58 (Rota); Dubois (part), Syn. Avium, 1, 1902, p. 710
(Rota); Takatsukasa and Kuroda (part), Tori, 1, 1915, p. 64
(Marianne = Rota).
_Zosterops semperi semperi_ Momiyama (part), Birds Micronesia,
1922, p. 23 (Rota); Kuroda, (part) in Momiyama, Birds Micronesia,
1922, p. 75 (Rota).
_Zosterops semperi rotensis_ Snouckaert, Alauda. (2), 4, 1932, p.
459 (Rota); Yamashina, Tori, 7, 1932, p. 399 (Rota); Hand-list
Japanese Birds, rev., 1932, p. 173 (Rota).
_Zosterops conspicillata rotensis_ Hand-list Japanese Birds, 3d
ed., 1942, p. 193 (Rota); Mayr, Amer. Mus. Novit., no. 1269, 1944,
p. 7 (Rota); _idem_, Birds Southwest Pacific, 1945, p. 299 (Rota);
Baker, Smithson. Misc. Coll., vol. 107, no. 15, 1948, p. 73
(Rota).
_Geographic range._--Micronesia: Mariana Islands--Rota.
_Characters._--Adult: Upper parts and sides of neck between
"warbler green" and "pyrite yellow" becoming lighter on the rump;
auriculars light yellowish-green; orbital ring white; fronto-loral
band narrowly tinged with yellow; underparts dingy yellow; wing
and tail feathers dark with light greenish-yellow edges; upper
mandible light brown; lower mandible light yellowish-brown; feet
light brown.
Resembles _Z. c. conspicillata_, but brighter greenish-yellow
above; chin and throat yellow like rest of underparts;
fronto-loral band tinged with bright yellow; auriculars resemble
closely the upper parts in color; narrow orbital ring.
_Measurements._--Measurements are listed in table 50.
_Specimens examined._--Total number, 5 (3 males, 1 female, 1
unsexed), from Mariana Islands, USNM--Rota (Oct. 18, 20, 22).
_Nesting._--Yamashina (1932a:399) records the taking of one nest
containing two eggs at Rota on March 7, 1931.
_Molt._--Specimens taken in October were in molt.
_Remarks._--Oustalet (1895:207) reported on two specimens of white-eye
taken at Rota by Marche. He considered them as being similar to the
birds at Palau. The birds at Rota were named as a separate subspecies by
Takatsukasa and Yamashina in 1931. The NAMRU2 party found the birds to
be numerous at Rota in October, 1945.
=Zosterops conspicillata semperi= Hartlaub