1. Species Theodoxus (Theodoxus) astrachanicus Starobogatov, 1994 accepted as Theodoxus major Issel, 1865 (unaccepted > junior subjective synonym)
2. Species Theodoxus (Theodoxus) austriacus (Rzehak, 1893) † accepted as Theodoxus (Theodoxus) cyrtocelis austriacus (Rzehak, 1893) † represented as Theodoxus cyrtocelis austriacus (Rzehak, 1893) † (unaccepted > superseded rank)
3. Species Theodoxus (Theodoxus) brauneri Lindholm, 1908 accepted as Theodoxus fluviatilis (Linnaeus, 1758) (ju)
4. Species Theodoxus (Theodoxus) callosus (Deshayes, 1835) accepted as Theodoxus baeticus (Lamarck, 1822) accepted as Theodoxus meridionalis (R. A. Philippi, 1836) (junior subjective synonym)
5. Species Theodoxus (Theodoxus) dacicus Pană, 2003 † accepted as Theodoxus pseudodacicus Neubauer, Harzhauser, Georgopoulou, Mandic & Kroh, 2014 † (unaccepted > junior homonym, junior homonym of T. dacicus Jekelius, 1944; T. pseudodacicus is a replacement name)
6. Species Theodoxus (Theodoxus) djedida (Pallary, 1920) accepted as Theodoxus maroccanus (Paladilhe, 1875) (unaccepted > junior subjective synonym)
7. Species Theodoxus (Theodoxus) elongatulus (Morelet, 1845) accepted as Theodoxus baeticus (Lamarck, 1822) accepted as Theodoxus meridionalis (R. A. Philippi, 1836) (junior subjective synonym)
8. Species Theodoxus (Theodoxus) euxinus (Clessin, 1885) accepted as Theodoxus fluviatilis (Linnaeus, 1758) (junior subjective synonym)
9. Species Theodoxus (Theodoxus) guadianensis (Morelet, 1845) accepted as Theodoxus baeticus (Lamarck, 1822) accepted as Theodoxus meridionalis (R. A. Philippi, 1836) (junior subjective synonym)
10. Species Theodoxus (Theodoxus) hassiacus Wenz, 1919 † accepted as Theodoxus subangularis (F. Sandberger, 1860) † (unaccepted > junior subjective synonym)
11. Species Theodoxus (Theodoxus) heldreichi (E. von Martens, 1879) accepted as Theodoxus fluviatilis (Linnaeus, 1758) (unaccepted > junior subjective synonym)
12. Species Theodoxus (Theodoxus) hidalgoi (Crosse, 1880) accepted as Theodoxus baeticus (Lamarck, 1822) accepted as Theodoxus meridionalis (R. A. Philippi, 1836) (junior subjective synonym)
13. Species Theodoxus (Theodoxus) mariae (Handmann, 1887) † accepted as Neritina mariae Handmann, 1887 † (unaccepted > superseded combination)
14. Species Theodoxus (Theodoxus) pallasi Lindholm, 1924 accepted as Theodoxus major Issel, 1865 (junior subjective synonym)
15. Species Theodoxus (Theodoxus) rumanus (Stefanescu, 1896) † accepted as Theodoxus (Calvertia) stefanescui (Fontannes, 1887) † represented as Theodoxus stefanescui (Fontannes, 1887) † (unaccepted > junior subjective synonym)
16. Species Theodoxus (Theodoxus) saulcyi (Bourguignat, 1852) accepted as Theodoxus fluviatilis (Linnaeus, 1758) (junior subjective synonym)
17. Species Theodoxus (Theodoxus) scamandrius [sic] † accepted as Theodoxus scamandri (Calvert & Neumayr, 1880) † (unaccepted > misspelling - incorrect subsequent spelling)
18. Species Theodoxus (Theodoxus) schultzii (Grimm, 1877) accepted as Theodoxus schultzii (Grimm, 1877) accepted as Theodoxus major Issel, 1865 (unaccepted > superseded combination)
19. Species Theodoxus (Theodoxus) serratiliformis (Geyer, 1914) † accepted as Theodoxus danubialis (C. Pfeiffer, 1828) (incorrect subsequent spelling; junior subjective synonym)
20. Species Theodoxus (Theodoxus) velascoi (Graells, 1846) accepted as Theodoxus baeticus (Lamarck, 1822) accepted as Theodoxus meridionalis (R. A. Philippi, 1836) (junior subjective synonym)
21. Species Theodoxus (Theodoxus) africanus (Reeve, 1856) represented as Theodoxus africanus (Reeve, 1856)
22. Species Theodoxus (Theodoxus) altenai Schütt, 1965 represented as Theodoxus altenai Schütt, 1965
23. Species Theodoxus (Theodoxus) arctilineatus (G. B. Sowerby II, 1849) represented as Theodoxus arctilineatus (G. B. Sowerby II, 1849)
24. Species Theodoxus (Theodoxus) baeticus (Lamarck, 1822) represented as Theodoxus (Theodoxus) meridionalis (R. A. Philippi, 1836) represented as Theodoxus meridionalis (R. A. Philippi, 1836)
25. Species Theodoxus (Theodoxus) becenensis (Cobălcescu, 1883) † represented as Theodoxus becenensis (Cobălcescu, 1883) †
26. Species Theodoxus (Theodoxus) boteani (Porumbaru, 1881) † represented as Theodoxus boteani (Porumbaru, 1881) †
27. Species Theodoxus (Theodoxus) brenneri (Handmann, 1882) † represented as Theodoxus brenneri (Handmann, 1882) †
28. Species Theodoxus (Theodoxus) carasiensis Jekelius, 1944 † represented as Theodoxus carasiensis Jekelius, 1944 †
29. Species Theodoxus (Theodoxus) constantiae (Stefanescu, 1896) † represented as Theodoxus constantiae (Stefanescu, 1896) †
30. Species Theodoxus (Theodoxus) crenulatus (Klein, 1853) † represented as Theodoxus crenulatus (Klein, 1853) †
31. Species Theodoxus (Theodoxus) culceri (Porumbaru, 1881) † represented as Theodoxus culceri (Porumbaru, 1881) †
32. Species Theodoxus (Theodoxus) cyrtocelis (Krauss, 1852) † represented as Theodoxus cyrtocelis (Krauss, 1852) †
33. Species Theodoxus (Theodoxus) danubialis (C. Pfeiffer, 1828) represented as Theodoxus danubialis (C. Pfeiffer, 1828)
34. Species Theodoxus (Theodoxus) denisluensis (Oppenheim, 1919) † represented as Theodoxus denisluensis (Oppenheim, 1919) †
35. Species Theodoxus (Theodoxus) deperditus (Almera, 1894) † represented as Theodoxus deperditus (Almera, 1894) †
36. Species Theodoxus (Theodoxus) elongatus (R. A. Philippi, 1844) † represented as Theodoxus elongatus (R. A. Philippi, 1844) †
37. Species Theodoxus (Theodoxus) eugenii Jekelius, 1944 † represented as Theodoxus eugenii Jekelius, 1944 †
38. Species Theodoxus (Theodoxus) fluviatilis (Linnaeus, 1758) represented as Theodoxus fluviatilis (Linnaeus, 1758)
39. Species Theodoxus (Theodoxus) gregarius (Thomä, 1845) † represented as Theodoxus gregarius (Thomä, 1845) †
40. Species Theodoxus (Theodoxus) hisingeri (Bellardi & Michelotti, 1840) † represented as Theodoxus hisingeri (Bellardi & Michelotti, 1840) †
41. Species Theodoxus (Theodoxus) hispalensis (E. von Martens, 1879) represented as Theodoxus hispalensis (E. von Martens, 1878)
42. Species Theodoxus (Theodoxus) intracarpaticus Jekelius, 1944 † represented as Theodoxus intracarpaticus Jekelius, 1944 †
43. Species Theodoxus (Theodoxus) isseli (Clerici, 1888) † represented as Theodoxus isseli (Clerici, 1888) †
44. Species Theodoxus (Theodoxus) jekeliusi Jurišić-Polšak, 1979 † represented as Theodoxus jekeliusi Jurišić-Polšak, 1979 †
45. Species Theodoxus (Theodoxus) leobersdorfensis (Handmann, 1887) † represented as Theodoxus leobersdorfensis (Handmann, 1887) †
46. Species Theodoxus (Theodoxus) meridionalis (R. A. Philippi, 1836) represented as Theodoxus meridionalis (R. A. Philippi, 1836)
47. Species Theodoxus (Theodoxus) milessii A. Papp, 1979 † represented as Theodoxus milessii A. Papp, 1979 †
48. Species Theodoxus (Theodoxus) militaris (Neumayr, 1869) † represented as Theodoxus militaris (Neumayr, 1869) †
49. Species Theodoxus (Theodoxus) moosbrunnensis A. Papp, 1953 † represented as Theodoxus moosbrunnensis A. Papp, 1953 †
50. Species Theodoxus (Theodoxus) morellii (Bellardi & Michelotti, 1840) † represented as Theodoxus morellii (Bellardi & Michelotti, 1840) †
51. Species Theodoxus (Theodoxus) pilidei (Tournouër, 1879) † represented as Theodoxus pilidei (Tournouër, 1879) †
52. Species Theodoxus (Theodoxus) postcrenulatus A. Papp, 1953 † represented as Theodoxus postcrenulatus A. Papp, 1953 †
53. Species Theodoxus (Theodoxus) prevostianus (C. Pfeiffer, 1828) represented as Theodoxus prevostianus (C. Pfeiffer, 1828)
54. Species Theodoxus (Theodoxus) punctatolineatus (Sinzov, 1897) † represented as Theodoxus punctatolineatus (Sinzov, 1897) †
55. Species Theodoxus (Theodoxus) semiplicatus (Neumayr, 1875) † represented as Theodoxus semiplicatus (Neumayr, 1875) †
56. Species Theodoxus (Theodoxus) simplex (T. Fuchs, 1877) † represented as Theodoxus simplex (T. Fuchs, 1877) †
57. Species Theodoxus (Theodoxus) soceni Jekelius, 1944 † represented as Theodoxus soceni Jekelius, 1944 †
58. Species Theodoxus (Theodoxus) subglobosus (Eichwald, 1853) † represented as Theodoxus subglobosus (Eichwald, 1853) †
59. Species Theodoxus (Theodoxus) syriacus (Bourguignat, 1852) represented as Theodoxus syriacus (Bourguignat, 1852)
60. Species Theodoxus (Theodoxus) thermalis (Récluz, 1852) represented as Theodoxus thermalis (Récluz, 1852)
61. Species Theodoxus (Theodoxus) tortuosus Jekelius, 1944 † represented as Theodoxus tortuosus Jekelius, 1944 †
62. Species Theodoxus (Theodoxus) transversalis (C. Pfeiffer, 1828) represented as Theodoxus transversalis (C. Pfeiffer, 1828)
63. Species Theodoxus (Theodoxus) trifasciatus (Grateloup, 1839) † represented as Theodoxus trifasciatus (Grateloup, 1839) †
64. Species Theodoxus (Theodoxus) turislavicus Jekelius, 1944 † represented as Theodoxus turislavicus Jekelius, 1944 †
65. Species Theodoxus (Theodoxus) valentinus (Graells, 1846) represented as Theodoxus valentinus (Graells, 1846)
66. Species Theodoxus (Theodoxus) velox V. Anistratenko, 1999 represented as Theodoxus velox V. Anistratenko, 1999
67. Species Theodoxus (Theodoxus) vondeli (Pallary, 1936) represented as Theodoxus vondeli (Pallary, 1936)
68. Species Theodoxus (Theodoxus) zebrina (Récluz, 1841) represented as Theodoxus zebrinus (Récluz, 1841)
69. Species Theodoxus (Theodoxus) zografi (Brusina, 1902) † represented as Theodoxus zografi (Brusina, 1902) †

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