Subgenus (Rasia) J. E. Gray, 1857

(3-7-3-0-1-1-1-2-14-0-0-0-0)
Ref. Bernard, 1983 p 16
Vaught, 1989 p 115
Syn. (Cara) J. E. Gray, 1857
Ref. Keen, 1971 p 48
[see also as Genus]

auricula (F. R. Bernard, 1983)
(3-7-3-0-1-1-1-2-14-1-0-0-0)
Syn. Arca (Arca) auricula G. B. Sowerby, 1833, not J. B. P. A. de Lamarck, 1819;
Arca (Arca) aviculaeformis authors, not P. -H. Nyst, 1848
Ref. Bernard, 1983 p 16

emarginata (G. B. Sowerby, 1833)
(3-7-3-0-1-1-1-2-14-2-0-0-0)
Ref. Keen, 1971 p 48 bw
Syn. Arca (Arca) emarginata G. B. Sowerby, 1833
Ref. Bernard, 1983 p 16

formosa (G. B. Sowerby, 1833)
(3-7-3-0-1-1-1-2-14-3-0-0-0)
Syn. Arca (Arca) aviculaeformis P. -H. Nyst, 1848;
Arca (Arca) aviculoides L. A. Reeve, 1844, not de Koninck, 1842;
Arca (Arca) formosa G. B. Sowerby, 1833
Ref. Bernard, 1983 p 16
Syn. Arca (Arca) auriculata G. B. Sowerby, 1833, not J. B. P. A. de Lamarck, 1819;
Arca (Arca) aviculaeformis P. -H. Nyst, 1848;
Arca (Arca) aviculoides L. A. Reeve, 1844, not de Koninck, 1842
Ref. Keen, 1971 p 48 bw