_Phoethon lepturus dorotheae_ Mathews, Austr. Avium. Rec., 2, 1913,
p. 7. (Type locality, Queensland.)
_Phaeton candidus_ Kittlitiz, Denkw. Reise russ. Amer. Micron. und
Kamchat., 1, 1858, p. 382 (Ualan); Hartlaub and Finsch, Proc.
Zool. Soc. London, 1868, pp. 9, 118 (Pelew); Finsch, Journ. f.
Ornith., 1872, p. 57 (Pelew); Hartlaub and Finsch, Proc. Zool.
Soc. London, 1872, pp. 90, 114 (Pelew, Ualan); Finsch, Journ. Mus.
Godeffroy, 1875, pp. 6, 47 (Palau); _idem_, Proc. Zool. Soc.
London, 1877 (1878), p. 782 (Ponapé); _idem_, Journ. f. Ornith.,
1880, pp. 296, 309 (Ponapé, Kuschai); _idem_, Proc. Zool. Soc.
London, 1880, p. 577 (Ruk); Schmeltz and Krause, Ethnogr. Abth.
Mus., Godeffroy, 1881, pp. 281, 299, 330, 353 (Ponapé, Mortlock,
Nukuor, Ruk); Finsch, Mitth. Ornith. Ver. Wien, 1884, p. 52
(Kuschai); Wiglesworth, Abhandl. und Ber. Zool. Mus. Dresden, no.
6, 1890-1891 (1891), p. 73 (Pelew, Ruk, Luganor, Nukuor, Ponapé,
Ualan, Marshalls); Oustalet, Nouv. Arch. Mus. Hist. Nat. Paris,
(3), 8, 1896, p. 62 (Agrigan, Palaos, Ruk, Kushai, Marshalls);
Hartert, Novit. Zool., 5, 1898, p. 68 (Marianne).
_Phaeton flavirostris_ Finsch, Ibis, 1880, pp. 329, 333 (Ratak
Chain); _idem_, Ibis, 1881, pp. 105, 109, 115 (Kuschai, Ponapé).
_Phaethon candidus_ Salvadori, Ornith. Papuasia, 3, 1882, p. 426
(Pelews, Carolines, Marshalls); Seale, Occ. Papers Bernice P.
Bishop Mus., 1, 1901, p. 23 (Agrigan); Safford, Osprey, 1902, p.
70 (Mariannes); Takatsukasa and Kuroda, Tori, 1, 1915, p. 50
(Pelew, Ponapé); Uchida, Annot. Zool. Japon., 9, 1918, pp. 489,
492 (Palau).
_Phaëthon lepturus_ Ogilvie-Grant, Cat. Birds British Mus., 26,
1898, p. 453 (Pelew, Carolines, Marshalls); Hartert, Novit. Zool.,
7, 1900, p. 10 (Ruk); Safford, The Plant World, 7, 1904, p. 268
(near Guam); _idem_, Contr. U. S. Nat. Herb., 9 1905, p. 80
(northern Marianas); Mayr, Birds Southwest Pacific, 1945, p. 17
(Palau); Strophlet, Auk, 63, 1946, p. 535 (Guam); Borror, Auk, 64,
1947, p. 416 (Agrihan); Stott, Auk, 64, 1947, p. 524 (Saipan).
_Phaeton lepturus_ Schnee, Zool. Jahrbücher, 20, 1904, p. 390
(Marschall Inseln).
_Leptophaethon lepturus dorothea_ Mathews, Birds Australia, 4,
1915, p. 309 (Pelew).
_Phaethan lepturus_ Cox, Island of Guam, 1917, p. 22 (northern
Marianas).
_Leptophaethon lepturus lepturus_ Kuroda, in Momiyama, Birds
Micronesia, 1922, p. 33 (Agrigan, Saipan, Pelew, Ruk, Luganor,
Nukuor, Ponapé, Kusaie, Marshalls).
_Phaethon lepturus dorotheae_ Yamashina, Tori, 7, 1932, p. 407
(Ponapé); Hand-list Japanese Birds, rev., 1932, p. 187 (Agrigan,
Pagan, Saipan, Agiguan, Palaus, Truk, Luganor, Nukuor, Ponapé,
Kusaie, Marshalls); Hand-list Japanese Birds, 3d ed., 1942, p. 209
(Agrigan, Pagan, Saipan, Agiguan, Babelthuap, Koror, Urukthapel,
Angaur, Unusuto, Truk, Luganor, Nukuor, Ponapé, Kusaie, Namorik);
Baker, Smithson. Misc. Coll., vol. 107, no. 15, 1948, p. 38 (Guam,
Peleliu, Ulithi, Truk).
_Geographic range._--Islands in the southwestern Pacific area. In
Micronesia: Mariana Islands--Agrigan, Pagan, Saipan, Agiguan, Rota,
Guam; Palau Islands--Babelthuap, Koror, Urukthapel, Peleliu,
Anguar, Unusuto; Caroline Islands Truk, Ulithi, Luganor, Nukuor,
Ponapé, Kusaie; Marshall Islands--Namorik.
_Characters._--Adult: White often with pinkish shade but lores and
eye streak black; feathers of head, flanks and under tail-coverts
with bases black; black on outer and subterminal part of inner
webbing of primaries; black, subterminal coloring on scapulars and
secondaries; black on shafts of elongated tail plumes; bill horn
yellow, dark basally; tarsus dark yellow; feet blackish.
Immature: Resembles adult but upper parts barred with black, bill
black on terminal part.
_Measurements._--Measurements of adult birds from Micronesia are
given in table 15.
_Weights._--The NAMRU2 party recorded weights of five adult males
from Guam as 294 (267-321) grams.