_Procellaria rostrata_ Peale, U. S. Expl. Exp., 8, 1848, p. 296.
(Type locality, Mountains about 6,000 feet on Tahiti, Society
Islands.)
_Procellaria desolata_ Pucheran, Voy. Pôle Sud, 3, 1853, p. 138
(des îles Carolines); Hartlaub, Journ. f. Ornith., 1854, p. 168
(Carolinen).
_Procellaria (Aestrelata) desolata_ Gray, Cat. Birds Trop. Is.
Pacific Ocean, 1859, p. 55 (Caroline Islands).
_Oestrelata rostrata_ Wiglesworth, Abhandl. und Ber. Zool. Mus.
Dresden, no. 6, 1890-1891 (1891), p. 82 (Caroline Is.); Godman,
Monogr. Petrels, pt. 3, 1908, p. 190 (Caroline Is.).
_Pterodroma rostrata_ Kuroda, in Momiyama, Birds Micronesia, 1922,
p. 33 (Carolines).
_Pterodroma rostrata_ subsp. (?) Hand-list Japanese Birds, rev.,
1932, p. 188 (Carolines); Hand-list Japanese Birds, 3d ed., 1942,
p. 210 (Carolines).
_Geographic range._--Known to breed on the Society and Marquesas
Islands. In Micronesia: Caroline Islands--exact locality unknown.
_Characters._--A large petrel with blackish-brown plumage except
for belly and under tail-coverts white and throat, upper breast
and flanks pale brown; bill black; legs yellowish; feet black.
This oceanic bird differs from other petrels and shearwaters of
Micronesia by the presence of a white abdomen in contrast with
dark plumage on upper parts, throat, and breast.
_Remarks._--A petrel which is referred to this subspecies has been taken
once in Micronesia, by Hombron and Jacquinot in the Caroline Islands. It
may be pointed out that the subspecies _P. r. becki_ Murphy is known
from the sea east of the Bismarck Archipelago and might range into
Micronesian waters.
=Pterodroma hypoleuca hypoleuca= Salvin