Genus Cetoconcha W. H. Dall, 1886[1889]

(3-2-4-0-2-2-0-1-0-0-0-0-0)
Ref. Abbott, 1974 p 562
Syn. Silenia Smith, 1885
Ref. Vokes, 1980 p 211
[see also as Subgenus under Genus Poromya]
Ref. Keen, 1971 p 298

atypha A. E. Verrill & K. J. Bush, 1898
(3-2-4-0-2-2-0-1-0-1-0-0-0)
Ref. Abbott, 1974 p 562

bulla (W. H. Dall, 1881) [T]
(3-2-4-0-2-2-0-1-0-2-0-0-0)
Ref. Abbott, 1974 p 562 d

malespinae W. G. Ridewood, 1903
(3-2-4-0-2-2-0-1-0-3-0-0-0)
Ref. Abbott, 1974 p 562
[=Poromya (Cetoconcha) malespinae (W. H. Dall, 1916)]
Ref. Bernard, 1983 p 65

margarita (W. H. Dall, 1886)
(3-2-4-0-2-2-0-1-0-4-0-0-0)
Ref. Abbott, 1974 p 562 d

scapha W. H. Dall, 1902
(3-2-4-0-2-2-0-1-0-5-0-0-0)
[=Poromya (Cetoconcha) scapha (W. H. Dall, 1902)]
Ref. Bernard, 1983 p 65

smithii [smithi] W. H. Dall, 1908
(3-2-4-0-2-2-0-1-0-6-0-0-0)
Ref. Abbott, 1974 p 562
[=Poromya (Cetoconcha) smithii (W. H. Dall, 1908)]
Ref. Bernard, 1983 p 65