1. Species Arca (Scapharca) aethiopica Thiele, 1931 accepted as Anadara aethiopica (Thiele, 1931) (basionym)
2. Species Arca (Scapharca) africana G. B. Sowerby III, 1904 accepted as Anadara pygmaea (H. Adams, 1872)
3. Species Arca (Scapharca) birleyana Melvill, 1907 accepted as Arca birleyana Melvill, 1907 accepted as Anadara vellicata (Reeve, 1844) (unaccepted > junior subjective synonym)
4. Species Arca (Scapharca) brevifrons G. B. Sowerby I, 1833 accepted as Lunarca brevifrons (G. B. Sowerby I, 1833) (unaccepted > superseded combination)
5. Species Arca (Scapharca) chavezi Engerrand & Urbina, 1910 † accepted as Anadara chavezi (Engerrand & Urbina, 1910) † (unaccepted > superseded combination)
6. Species Arca (Scapharca) cibotina Melvill, 1907 accepted as Calloarca cibotina (Melvill, 1907) (unaccepted > superseded combination)
7. Species Arca (Scapharca) consociata E. A. Smith, 1885 accepted as Anadara consociata (E. A. Smith, 1885) (basionym)
8. Species Arca (Scapharca) corculum Mörch, 1861 accepted as Anadara bifrons (P. P. Carpenter, 1857)
9. Species Arca (Scapharca) crescens Spieker, 1922 † accepted as Arca chiriquiensis var. toroensis Spieker, 1922 † (unaccepted > junior subjective synonym)
10. Species Arca (Scapharca) culebrensis E. A. Smith, 1885 accepted as Bentharca asperula (Dall, 1881) (junior subjective synonym)
11. Species Arca (Scapharca) dichotoma Deshayes, 1863 accepted as Hawaiarca sulcata (Lamarck, 1819)
12. Species Arca (Scapharca) eusphaera O. Boettger, 1883 † accepted as Anadara (Scapharca) eusphaera (O. Boettger, 1883) † represented as Anadara eusphaera (O. Boettger, 1883) † (superseded combination)
13. Species Arca (Scapharca) fultoni G. B. Sowerby III, 1907 accepted as Anadara fultoni (G. B. Sowerby III, 1907)
14. Species Arca (Scapharca) gendinganensis K. Martin, 1910 † accepted as Anadara gendinganensis (K. Martin, 1910) †
15. Species Arca (Scapharca) geyleri O. Boettger, 1880 † accepted as Anadara geyleri (O. Boettger, 1880) † (unaccepted > superseded combination)
16. Species Arca (Scapharca) hulshofi K. Martin, 1910 † accepted as Anadara hulshofi (K. Martin, 1910) †
17. Species Arca (Scapharca) imporcata Spieker, 1922 † accepted as Arca chiriquiensis var. toroensis Spieker, 1922 † (unaccepted > junior subjective synonym)
18. Species Arca (Scapharca) inaequisculpta E. A. Smith, 1885 accepted as Bathyarca inaequisculpta (E. A. Smith, 1885) (basionym)
19. Species Arca (Scapharca) menengtengana K. Martin, 1910 † accepted as Anadara menengtengana (K. Martin, 1910) †
20. Species Arca (Scapharca) nipponensis Pilsbry, 1901 accepted as Anadara satowi (Dunker, 1882) (unaccepted > superseded combination)
21. Species Arca (Scapharca) peitaihoensis Grabau & S. G. King, 1928 accepted as Anadara kagoshimensis (Tokunaga, 1906)
22. Species Arca (Scapharca) pittieri Dall, 1912 † accepted as Scapharca (Cunearca) pittieri (Dall, 1912) † (unaccepted > superseded combination)
23. Species Arca (Scapharca) sedanensis K. Martin, 1910 † accepted as Anadara sedanensis (K. Martin, 1910) †
24. Species Arca (Scapharca) sobrina Pilsbry & C. W. Johnson, 1917 † accepted as Arca sobrina Pilsbry & C. W. Johnson, 1917 †
25. Species Arca (Scapharca) staminea Say, 1831 † accepted as Anadara staminea (Say, 1831) † (unaccepted > superseded combination)
26. Species Arca (Scapharca) tegalensis K. Martin, 1910 † accepted as Anadara tegalensis (K. Martin, 1910) †
27. Species Arca (Scapharca) tjibaliungensis K. Martin, 1910 † accepted as Anadara tjibaliungensis (K. Martin, 1910) †
28. Species Arca (Scapharca) henekeni Maury, 1917 † represented as Scapharca henekeni (Maury, 1917) †
29. Species Arca (Scapharca) charanensis Spieker, 1922 † (uncertain > unassessed)
30. Species Arca (Scapharca) coccopleura Pilsbry & C. W. Johnson, 1917 † (uncertain > unassessed)
31. Species Arca (Scapharca) copiosa Pilsbry & C. W. Johnson, 1917 † (uncertain > unassessed)
32. Species Arca (Scapharca) devexa Pilsbry & C. W. Johnson, 1917 † (uncertain > unassessed)
33. Species Arca (Scapharca) elnia Glenn, 1904 † (uncertain > unassessed)
34. Species Arca (Scapharca) fissicosta Spieker, 1922 † (uncertain > unassessed)
35. Species Arca (Scapharca) golfoyaquensis Maury, 1917 † (uncertain > unassessed)
36. Species Arca (Scapharca) intumulata Pilsbry & C. W. Johnson, 1917 † (uncertain > unassessed)
37. Species Arca (Scapharca) obesiformis Grzybowski, 1899 † (uncertain > unassessed)
38. Species Arca (Scapharca) pantheonensis Spieker, 1922 † (uncertain > unassessed)
39. Species Arca (Scapharca) proletaria Pilsbry & C. W. Johnson, 1917 † (uncertain > unassessed)
40. Species Arca (Scapharca) singewaldi Spieker, 1922 † (uncertain > unassessed)
41. Species Arca (Scapharca) vanholsti Spieker, 1922 † (uncertain > unassessed)
42. Species Arca (Scapharca) zapotalensis Spieker, 1922 † (uncertain > unassessed)

The webpage text is licensed under a Creative Commons Attribution 4.0 License