Subgenus (Scapharca) J. E. Gray, 1847

(3-7-3-0-1-1-1-2-15-0-0-0-0)
Ref. Bernard, 1983 p 16
Keen, 1971 p 48
Syn. (Sectiarca) A. A. Olsson, 1961
Ref. Vaught, 1989 p 115
[see also as Genus]

biangulata (G. B. Sowerby, 1833)
(3-7-3-0-1-1-1-2-15-1-0-0-0)
Syn. Arca (Arca) biangulata G. B. Sowerby, 1833;
Arca (Arca) gordita H. N. Lowe, 1935;
Arca (Arca) sowerbyi A. Orbigny, 1846
Ref. Bernard, 1983 p 16
Keen, 1971 p 50 bw

cepoides (L. A. Reeve, 1844)
(3-7-3-0-1-1-1-2-15-2-0-0-0)
Ref. Keen, 1971 p 50 bw
Syn. Arca (Arca) cepoides L. A. Reeve, 1844
Ref. Bernard, 1983 p 16

hyphalopilema G. B. Campbell, 1962
(3-7-3-0-1-1-1-2-15-3-0-0-0)
Ref. Bernard, 1983 p 16
Keen, 1971 p 50 bw

labiosa (G. B. Sowerby, 1833)
(3-7-3-0-1-1-1-2-15-4-0-0-0)
Ref. Keen, 1971 p 50 bw
Syn. Arca (Arca) labiosa G. B. Sowerby, 1833
Ref. Bernard, 1983 p 16