1. Species Vola fredericksburgensis Cragin, 1895 †
2. Species Vola alata (Buch, 1838) † accepted as Weyla alata (Buch, 1838) † (unaccepted > superseded combination)
3. Species Vola bellula Cragin, 1893 † accepted as Neithea bellula (Cragin, 1893) † (unaccepted > superseded combination)
4. Species Vola cenomanensis Soehle, 1897 † accepted as Neithea coquandi (A. Péron, 1877) † (unaccepted > junior subjective synonym)
5. Species Vola dutrugei (Coquand, 1862) † accepted as Neithea dutrugei (Coquand, 1862) † (unaccepted > superseded combination)
6. Species Vola ettalensis Soehle, 1897 † accepted as Neithea aequicostata (Lamarck, 1819) † (unaccepted > junior subjective synonym)
7. Species Vola irregularis Böse, 1910 † accepted as Neithea irregularis (Böse, 1910) † (unaccepted > superseded combination)
8. Species Vola jacobaea (Linnaeus, 1758) accepted as Pecten jacobaeus (Linnaeus, 1758) (unaccepted > superseded combination)
9. Species Vola jacobea [sic] accepted as Pecten jacobaeus (Linnaeus, 1758) (unaccepted > misspelling - incorrect subsequent spelling)
10. Species Vola laticostata Angas, 1865 accepted as Pecten fumatus Reeve, 1852 (synonym)
11. Species Vola lindiensis Krenkel, 1910 † accepted as Neithea atava (F. A. Roemer, 1839) † (unaccepted > junior subjective synonym)
12. Species Vola maxima (Linnaeus, 1758) accepted as Pecten maximus (Linnaeus, 1758) (unaccepted > superseded combination)
13. Species Vola neumanni Dacqué, 1905 † accepted as Neithea atava (F. A. Roemer, 1839) † (unaccepted > junior subjective synonym)
14. Species Vola phaseola (Lamarck, 1819) † accepted as Neithea aequicostata (Lamarck, 1819) † (subjective synonym)
15. Species Vola propinqua Holzapfel, 1889 † accepted as Neithea regularis (Schlotheim, 1813) † (unaccepted > junior subjective synonym)
16. Species Vola quinqueangularis Noetling, 1897 † accepted as Neithea sexangularis (A. d'Orbigny, 1847) † (unaccepted > junior subjective synonym)
17. Species Vola simplex Jaworski, 1925 † accepted as Weyla bodenbenderi (Behrendsen, 1891) † (unaccepted > junior subjective synonym)
18. Species Vola subalpina Böse, 1910 † accepted as Neithea subalpina (Böse, 1910) † (unaccepted > superseded combination)
19. Species Vola texana (C. F. Roemer, 1852) † accepted as Neithea texana (C. F. Roemer, 1852) † (unaccepted > superseded combination)

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