1. Species Cryptoplax acerocostata Sirenko, Saito & Nguyen. 2024
2. Species Cryptoplax brunoi Saito, 2023
3. Species Cryptoplax burrowi (E. A. Smith, 1884)
4. Species Cryptoplax dawydoffi Leloup, 1937
5. Species Cryptoplax dimidiata Ang, 1967
6. Species Cryptoplax dupuisi Ashby, 1931
7. Species Cryptoplax elioti Pilsbry, 1901
8. Species Cryptoplax hartmeyeri Thiele, 1911
9. Species Cryptoplax iredalei Ashby, 1923
10. Species Cryptoplax japonica Pilsbry, 1901
11. Species Cryptoplax larvaeformis (Burrow, 1815)
12. Species Cryptoplax montanoi Rochebrune, 1882
13. Species Cryptoplax mystica Iredale & Hull, 1925
14. Species Cryptoplax oculata (Quoy & Gaimard, 1835)
15. Species Cryptoplax plana Ang, 1967
16. Species Cryptoplax propior Is. Taki & Iw. Taki, 1930
17. Species Cryptoplax risbeci Kaas & Van Belle, 1998
18. Species Cryptoplax royana Iredale & Hull, 1925
19. Species Cryptoplax striata (Lamarck, 1819)
20. Species Cryptoplax sykesi Thiele, 1909
21. Species Cryptoplax vittata Ang, 1967
22. Subgenus Cryptoplax (Notoplax) H. Adams, 1862 accepted as Notoplax H. Adams, 1862 (original combination)
    1. Species Cryptoplax (Notoplax) speciosa H. Adams, 1862 accepted as Notoplax speciosa (H. Adams, 1862) (unaccepted > superseded combination)
23. Species Cryptoplax caledonica Risbec, 1946 accepted as Cryptoplax risbeci Kaas & Van Belle, 1998 (homonym)
24. Species Cryptoplax caledonicus Rochebrune, 1882 accepted as Cryptoplax larvaeformis (Burrow, 1815)
25. Species Cryptoplax coronatus Rochebrune, 1884 accepted as Cryptoplax larvaeformis (Burrow, 1815) (unaccepted > junior subjective synonym)
26. Species Cryptoplax depressus Blainville, 1818 accepted as Cryptoconchus porosus (Burrow, 1815) (junior subjective synonym)
27. Species Cryptoplax dimidiatus Ang, 1967 accepted as Cryptoplax dimidiata Ang, 1967 (original combination)
28. Species Cryptoplax enigmaticus Leloup, 1980 accepted as Cryptoplax sykesi Thiele, 1909 (unaccepted > junior subjective synonym)
29. Species Cryptoplax evanescens Cooke, 1913 accepted as Cryptoplax elioti Pilsbry, 1901
30. Species Cryptoplax heurteli Rochebrune, 1882 accepted as Cryptoplax larvaeformis (Burrow, 1815)
31. Species Cryptoplax japonicus Pilsbry, 1901 accepted as Cryptoplax japonica Pilsbry, 1901 (original combination)
32. Species Cryptoplax jugosus Bergenhayn, 1930 accepted as Cryptoplax elioti Pilsbry, 1901
33. Species Cryptoplax meridiana Iredale & Hull, 1925 accepted as Cryptoplax iredalei Ashby, 1923
34. Species Cryptoplax mjoebergi Bergenhayn, 1933 accepted as Cryptoplax burrowi (E. A. Smith, 1884) (unaccepted > junior subjective synonym)
35. Species Cryptoplax planus Ang, 1967 accepted as Cryptoplax plana Ang, 1967 (original combination)
36. Species Cryptoplax rhodoplax Pilsbry, 1901 accepted as Cryptoplax japonica Pilsbry, 1901
37. Species Cryptoplax striatus (Lamarck, 1819) accepted as Cryptoplax striata (Lamarck, 1819) (wrong gender agreement of specific epithet)
38. Species Cryptoplax torresianus Rochebrune, 1882 accepted as Cryptoplax striata (Lamarck, 1819)
39. Species Cryptoplax unciniferus Rochebrune, 1882 accepted as Cryptoplax larvaeformis (Burrow, 1815)
40. Species Cryptoplax peroni Rochebrune, 1882 (uncertain > taxon inquirendum)

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