1. Species Byssoarca alternata G. B. Sowerby I, 1833 accepted as Calloarca alternata (G. B. Sowerby I, 1833) (original combination)
2. Species Byssoarca decussata G. B. Sowerby I, 1833 accepted as Barbatia decussata (G. B. Sowerby I, 1833) (superseded combination)
3. Species Byssoarca divaricata G. B. Sowerby I, 1833 accepted as Acar plicata (Dillwyn, 1817) (junior subjective synonym)
4. Species Byssoarca illota G. B. Sowerby I, 1833 accepted as Fugleria illota (G. B. Sowerby I, 1833) (original combination)
5. Species Byssoarca lima Conrad, 1847 † accepted as Barbatia (Cucullaearca) lima (Conrad, 1847) † represented as Barbatia lima (Conrad, 1847) † (unaccepted > superseded combination)
6. Species Byssoarca lithodomus G. B. Sowerby I, 1833 accepted as Litharca lithodomus (G. B. Sowerby I, 1833) (unaccepted > superseded combination)
7. Species Byssoarca lurida G. B. Sowerby I, 1833 accepted as Barbatia lurida (G. B. Sowerby I, 1833) (original combination)
8. Species Byssoarca maculata G. B. Sowerby I, 1833 accepted as Arca avellana Lamarck, 1819 accepted as Lamarcka avellana (Lamarck, 1819) (junior synonym)
9. Species Byssoarca mutabilis G. B. Sowerby I, 1833 accepted as Lamarcka mutabilis (G. B. Sowerby I, 1833) (original combination)
10. Species Byssoarca pacifica G. B. Sowerby I, 1833 accepted as Arca pacifica (G. B. Sowerby I, 1833) (original combination)
11. Species Byssoarca parva G. B. Sowerby I, 1833 accepted as Barbatia parva (G. B. Sowerby I, 1833) (original combination)
12. Species Byssoarca pernoides P. P. Carpenter, 1857 accepted as Arca pernoides (P. P. Carpenter, 1857)
13. Species Byssoarca pusilla G. B. Sowerby I, 1833 accepted as Acar pusilla (G. B. Sowerby I, 1833)
14. Species Byssoarca semicostata McCoy, 1844 † accepted as Parallelodon semicostatus (McCoy, 1844) † (unaccepted > superseded combination)
15. Species Byssoarca solida G. B. Sowerby I, 1833 accepted as Arcopsis solida (G. B. Sowerby I, 1833) (original combination)
16. Species Byssoarca truncata G. B. Sowerby I, 1833 accepted as Lamarcka truncata (G. B. Sowerby I, 1833) (original combination)
17. Species Byssoarca velata G. B. Sowerby I, 1833 accepted as Barbatia foliata (Forsskål, 1775)
18. Species Byssoarca vespertilio P. P. Carpenter, 1857 accepted as Barbatia lurida (G. B. Sowerby I, 1833) (unaccepted > junior subjective synonym)
19. Species Byssoarca lanceolata McCoy, 1844 † (uncertain > nomen dubium)
20. Species Byssoarca mississippiensis Conrad, 1847 † (uncertain > unassessed)
21. Species Byssoarca protracta Conrad, 1847 † (uncertain > unassessed)

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