_Puffinus dichrous_ Finsch and Hartlaub, Fauna Centralpolynesiens,
1867, p. 244. (Type locality, McKean Island, Phoenix Group.)
_Puffinus dichrous_ Hartlaub and Finsch, Proc. Zool. Soc. London,
1872, pp. 90, 108 (Pelew); Finsch, Journ. Mus. Godeffroy, 8, 1875,
pp. 6, 44 (Palau).
_Puffinus opisthomelas_ var. _minor_ Hartlaub, Proc. Zool. Soc.
London, 1867 (1868), p. 832 (Type locality, Pelew); Finsch, Journ.
f. Ornith., 1872, p. 57 (Pelew).
_Puffinus opisthomelas_ Hartlaub and Finsch, Proc. Zool. Soc. London,
1868, pp. 9, 118 (Pelew); Finsch, Journ. f. Ornith., 1870, p. 371
(Pelew).
_Puffinus tenebrosus_ Pelzeln, Ibis, 1873, p. 47, fig. 1 (Type
locality, unknown==Pelew Islands, _ex_ Mathews); Oustalet, Nouv.
Arch. Mus. Hist. Nat. Paris, (3), 8, 1896, p. 55 (Rota); Hartert,
Novit. Zool., 5, 1898, p. 69 (Marianne); Seale, Occ. Papers Bernice
P. Bishop Mus., 1, 1901, p. 23 (Marianas?); Safford, The Plant World,
7, 1904, p. 268 (Guam).
_Puffinus obscurus_ Finsch, Journ. Mus. Godeffroy, 12, 1876, pp.
18, 40 (Ponapé, Palau); _idem_, Proc. Zool. Soc. London, 1877, p.
786 (Palau); _idem_, Proc. Zool. Soc. London, 1877 (1878), p. 782
(Ponapé); _idem_, Journ. f. Ornith., 1880, pp. 295, 309 (Ponapé,
Kuschai); _idem_, Proc. Zool. Soc. London, 1880, p. 577 (Ruk);
_idem_, Ibis, 1881, p. 109 (Kuschai); _idem_, Ibis, 1881, pp. 113,
115 (Ponapé); Schmeltz and Krause, Ethnogr. Abth. Mus. Godeffroy,
1881, p. 353 (Ruk); Salvin, Ibis, 1888, p. 357 (Pelew);
Wiglesworth, Abhandl. und Ber. Zool. Mus. Dresden, no. 6, 1890-1891
(1891), p. 79 (Ruk, Ponapé, Pelew); Oustalet, Nouv. Arch. Mus.
Hist. Nat. Paris, (3), 8, 1896, p. 54 (Saypan, Palaos); Salvin,
Cat. Birds British Mus., 25, 1896, p. 382 (Carolines, Pelews);
Hartert, Novit. Zool., 5, 1898, p. 68 (Marianne); Seale, Occ.
Papers Bernice P. Bishop Mus., 1, 1901, p. 23 (Marianas?); Safford,
Osprey, 1902, p. 70 (Marianas); Dubois, Syn. Avium, 2, 1904, p.
1031 (Pelew, Carolines); Godman, Monogr. Petrels, pt. 2, 1908, pp.
126, 127 (Pelew, Ruk, Ponapé).
_Puffinus obscurus obscurus_ Hartert, Novit. Zool., 7, 1900, p. 10
(Ruk); Kuroda, in Momiyama, Birds Micronesia, 1922, p. 32 (Saipan,
Ruk, Ponapé, Pelew).
_Puffinus lherminieri minor_ Mathews, Birds Australia, 2, 1912, p.
70 (Pelew, Carolines).
_Puffinus assimilis minor_ Mathews, Syst. Avium Australasianarum,
1, 1927, p. 111 (Pelew).
_Puffinus lherminieri dichrous_ Murphy, Amer. Mus. Novit., no.
276, 1927, p. 10 (Pelews, Carolines); Peters, Check-list Birds
World, 1, 1931, p. 60 (Pelew); Yamashina, Tori, 7, 1932, p. 408
(Arakabesan); Hand-list Japanese Birds, rev., 1932, p. 188
(Saipan, Truk, Ponapé, Palaus); Hand-list Japanese Birds, 3rd ed.,
1942, p. 209 (Saipan, Truk, Ponapé, Palau); Mayr, Birds Southwest
Pacific, 1945, p. 10 (Carolines, Palaus); Baker, Smithson. Misc.
Coll., vol. 107, no. 15, 1948, p. 37 (Palau).
_Alphapuffinus lherminieri minor_ Mathews, Novit. Zool., 39, 1934,
p. 182 (Pelew Islands).
_Puffinus obscura_ Bryan, Guam Rec., vol. 13, No. 2, 1936, p. 15
(Guam).
_Geographic range._--Known from Phoenix, Nauru, Micronesia, and
south to the Samoan, Society, Tuamotu, and Marquesas islands. In
Micronesia: Mariana Islands--Guam, Rota, Saipan; Palau
Islands--Babelthuap, Koror, Arakabesan; Caroline Islands--Truk,
Ponapé, Kusaie.
_Characters._--A small shearwater with upper parts sooty-black;
under parts white except for sides of breast grayish and under
tail-coverts blackish; bill blackish; feet yellowish, outer toe
black.
_Measurements._--Measurements of 17 adult birds (9 males, 7
females, 1 unsexed) from Micronesia (Palau, Truk, Ponapé, Kusaie)
and 10 adult birds (6 males, 4 females) from the Phoenix Group
(Enderbury, Canton) are listed in table 14.