1. Species Cassidaria mirabilis Wilckens, 1910 †
2. Species Cassidaria arntzenii K. Martin, 1914 † accepted as Galeodea arntzenii (K. Martin, 1914) †
3. Species Cassidaria bistriata Settepassi, 1970 accepted as Galeodea echinophora (Linnaeus, 1758) (not available, published in a work which does not consistently use binominal nomenclature (ICZN art. 11.4))
4. Species Cassidaria bucquoyi Locard, 1886 accepted as Galeodea echinophora (Linnaeus, 1758)
5. Species Cassidaria cingulata Lamarck, 1822 accepted as Linatella caudata (Gmelin, 1791) (junior subjective synonym)
6. Species Cassidaria cingulifera R. Hoernes & Auinger, 1884 † accepted as Eudolium subintermedium (A. d'Orbigny, 1852) † (junior synonym)
7. Species Cassidaria coronata Deshayes, 1830 † accepted as Galeodea coronata (Deshayes, 1830) † (unaccepted > superseded combination)
8. Species Cassidaria cretacea J. Müller, 1851 † accepted as Trochactaeon cretaceus (J. Müller, 1851) † (unaccepted > superseded combination)
9. Species Cassidaria cythara (Brocchi, 1814) † accepted as Morum cythara (Brocchi, 1814) †
10. Species Cassidaria dautzenbergi Locard, 1886 accepted as Galeodea echinophora (Linnaeus, 1758)
11. Species Cassidaria depressa R. A. Philippi, 1844 accepted as Galeodea rugosa (Linnaeus, 1771) (unaccepted > junior subjective synonym)
12. Species Cassidaria deshayesii Duval, 1841 accepted as Fusimorio deshayesii (Duval, 1841) (original combination)
13. Species Cassidaria desori d'Archiac & Haime, 1854 † accepted as Galeodea desori (d'Archiac & Haime, 1854) † (superseded combination)
14. Species Cassidaria echinophora (Linnaeus, 1758) accepted as Galeodea echinophora (Linnaeus, 1758)
15. Species Cassidaria enodis Deshayes, 1865 † accepted as Galeodea enodis (Deshayes, 1865) † (unaccepted > superseded combination)
16. Species Cassidaria erbi Haanstra & Spiker, 1932 † accepted as Galeodea erbi (Haanstra & Spiker, 1932) †
17. Species Cassidaria funiculosa Deshayes, 1835 † accepted as Galeodea funiculosa (Deshayes, 1835) † (unaccepted > superseded combination)
18. Species Cassidaria gradata Tate, 1889 † accepted as Galeodea gradata (Tate, 1889) † (superseded combination)
19. Species Cassidaria javana K. Martin, 1879 † accepted as Eudolium crosseanum (Monterosato, 1869) (junior subjective synonym)
20. Species Cassidaria laevigata G. B. Sowerby I, 1850 † accepted as Sconsia laevigata (G. B. Sowerby I, 1850) † (unaccepted > superseded combination)
21. Species Cassidaria minbuensis Noetling, 1895 † accepted as Fusimorio minbuensis (Noetling, 1895) † (original combination)
22. Species Cassidaria mutica Michelotti, 1861 † accepted as Eudolium muticum (Michelotti, 1861) † (superseded combination)
23. Species Cassidaria orbigny Bellardi, 1852 † accepted as Sconsia orbigny (Bellardi, 1852) †
24. Species Cassidaria planotecta O. Meyer & Aldrich, 1886 † accepted as Morio planotecta (O. Meyer & Aldrich, 1886) † (unaccepted > superseded combination)
25. Species Cassidaria plicata Calcara, 1840 accepted as Galeodea echinophora (Linnaeus, 1758)
26. Species Cassidaria pliocenica Settepassi, 1970 accepted as Galeodea echinophora (Linnaeus, 1758) (not available, published in a work which does not consistently use binominal nomenclature (ICZN art. 11.4))
27. Species Cassidaria pretiosa Deshayes, 1865 † accepted as Galeodea pretiosa (Deshayes, 1865) † (unaccepted > superseded combination)
28. Species Cassidaria pseudobistriata Settepassi, 1970 accepted as Galeodea echinophora (Linnaeus, 1758) (not available, published in a work which does not consistently use binominal nomenclature (ICZN art. 11.4))
29. Species Cassidaria scilla Risso, 1826 † accepted as Galeodea echinophora (Linnaeus, 1758)
30. Species Cassidaria singularis Deshayes, 1865 † accepted as Galeodea singularis (Deshayes, 1865) † (unaccepted > superseded combination)
31. Species Cassidaria striata Lamarck, 1816 accepted as Sconsia grayi A. Adams, 1855 (Invalid: junior secondary homonym of Cassis striata J. Sowerby, 1812)
32. Species Cassidaria sulcata F. W. Hutton, 1873 † accepted as Galeodea sulcata (F. W. Hutton, 1873) † (superseded combination)
33. Species Cassidaria textiliosa Deshayes, 1835 † accepted as Galeodea textiliosa (Deshayes, 1835) † (unaccepted > superseded combination)
34. Species Cassidaria tuberculata Risso, 1826 † accepted as Galeodea echinophora (Linnaeus, 1758)
35. Species Cassidaria tuberculifera Hupé, 1854 † accepted as Echinophoria monilifera (G. B. Sowerby I, 1846) † (unaccepted > junior subjective synonym)
36. Species Cassidaria tyrrhena (Gmelin, 1791) accepted as Galeodea rugosa (Linnaeus, 1771)
37. Species Cassidaria uniseriata Settepassi, 1970 accepted as Galeodea echinophora (Linnaeus, 1758) (not available, published in a work which does not consistently use binominal nomenclature (ICZN art. 11.4))
38. Species Cassidaria washingtoniana C. E. Weaver, 1912 † accepted as Olequahia washingtoniana (C. E. Weaver, 1912) †
39. Species Cassidaria wilsoni Tate, 1889 † accepted as Galeodea wilsoni (Tate, 1889) † accepted as Echinophoria wilsoni (Tate, 1889) † (superseded combination)
40. Species Cassidaria formosa Alekseev, 1963 † (uncertain > taxon inquirendum)
41. Species Cassidaria pschischica Korobkov, 1949 † (uncertain > taxon inquirendum)
42. Species Cassidaria striatula Bonelli, 1825 † (uncertain > unassessed)

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