1. Subgenus Tritonidea (Cantharus) Röding, 1798 accepted as Cantharus Röding, 1798
   1. Species Tritonidea (Cantharus) fuscozonatus Suter, 1908 accepted as Buccinulum fuscozonatum (Suter, 1908) (basionym)
   2. Species Tritonidea (Cantharus) samoensis Dunker, 1871 (uncertain > unassessed)
2. Species Tritonidea agalma E. A. Smith, 1906 accepted as Pollia delicata (E. A. Smith, 1899)
3. Species Tritonidea australis Pease, 1871 accepted as Engina australis (Pease, 1871)
4. Species Tritonidea castanea Melvill, 1912 accepted as Prodotia castanea (Melvill, 1912) (original combination)
5. Species Tritonidea colensoi Suter, 1908 accepted as Buccinulum littorinoides (Reeve, 1846) (junior subjective synonym)
6. Species Tritonidea curtisiana E. A. Smith, 1884 accepted as Engina curtisiana (E. A. Smith, 1884) (original combination)
7. Species Tritonidea delicata E. A. Smith, 1899 accepted as Pollia delicata (E. A. Smith, 1899) (original combination)
8. Species Tritonidea dentata Schepman, 1911 accepted as Preangeria dentata (Schepman, 1911) (original combination)
9. Species Tritonidea fumosa (Dillwyn, 1817) accepted as Pollia fumosa (Dillwyn, 1817)
10. Species Tritonidea fuscopicta G. B. Sowerby III, 1905 accepted as Pollia fuscopicta (G. B. Sowerby III, 1905) (original combination)
11. Species Tritonidea fusiformis Verco, 1896 accepted as Pollia bednalli (G. B. Sowerby III, 1895) (unaccepted > junior homonym, junior homonym of Tritonidea fusiformis Martin, 1883; Tasmeuthria flindersi Cotton & Godfrey, 1932 is a replacement name.)
12. Species Tritonidea insculpta G. B. Sowerby III, 1900 accepted as Cancellopollia insculpta (G. B. Sowerby III, 1900) (original combination)
13. Species Tritonidea lefevreiana Tapparone Canefri, 1881 accepted as Cytharomorula lefevreiana (Tapparone Canefri, 1881) (original combination)
14. Species Tritonidea natalensis E. A. Smith, 1901 accepted as Pollia subcostata (Krauss, 1848)
15. Species Tritonidea neglecta G. B. Sowerby III, 1894 accepted as Orania gaskelli (Melvill, 1891) (synonym)
16. Species Tritonidea petterdi Brazier, 1872 accepted as Maculotriton serriale (Deshayes, 1833) (junior subjective synonym)
17. Species Tritonidea polychloros Tapparone Canefri, 1881 accepted as Engina polychloros (Tapparone Canefri, 1881) (original combination)
18. Species Tritonidea proxima Tapparone Canefri, 1881 accepted as Engina obliquicostata (Reeve, 1846) (uncertain synonym)
19. Species Tritonidea rufina Jousseaume, 1888 accepted as Pollia rubens (Küster, 1858)
20. Species Tritonidea seurati Couturier, 1907 accepted as Stosicia bourguignati (Issel, 1869)
21. Species Tritonidea sowerbyana Melvill & Standen, 1903 accepted as Pollia sowerbyana (Melvill & Standen, 1903) (unaccepted > superseded combination)
22. Species Tritonidea submenkeana Pilsbry, 1901 accepted as Engina menkeana (Dunker, 1860) (unaccepted > junior subjective synonym)
23. Species Tritonidea subrubiginosa E. A. Smith, 1879 accepted as Pollia subrubiginosa (E. A. Smith, 1879) (original combination)
24. Species Tritonidea tinctus (Conrad, 1846) accepted as Gemophos tinctus (Conrad, 1846)
25. Species Tritonidea tosana Pilsbry, 1904 accepted as Pollia mollis (A. Gould, 1860) (unaccepted > junior subjective synonym)
26. Species Tritonidea undosa (Linnaeus, 1758) accepted as Pollia undosa (Linnaeus, 1758)
27. Species Tritonidea undulata Schepman, 1891 accepted as Pollia mollis (A. Gould, 1860) (unaccepted > junior subjective synonym)
28. Species Tritonidea aspera Dunker, 1871 (uncertain > unassessed)
29. Species Tritonidea difficilis E. A. Smith, 1913 (uncertain > taxon inquirendum)
30. Species Tritonidea rosacea E. A. Smith, 1913 (uncertain > taxon inquirendum)

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