1. Species Polyonyx angustus Osawa, 2018
2. Species Polyonyx biunguiculatus (Dana, 1852)
3. Species Polyonyx boucheti Osawa, 2007
4. Species Polyonyx bouvieri de Saint Joseph, 1900
5. Species Polyonyx confinis Haig, 1960
6. Species Polyonyx deezi Osawa & Sato, 2022
7. Species Polyonyx gibbesi Haig, 1956
8. Species Polyonyx haigae McNeill, 1968
9. Species Polyonyx hendersoni Southwell, 1909
10. Species Polyonyx heok Osawa & Ng, 2016
11. Species Polyonyx kumejima Osawa & Ng, 2016
12. Species Polyonyx loimicola Sankolli, 1965
13. Species Polyonyx maccullochi Haig, 1965
14. Species Polyonyx nitidus Lockington, 1878
15. Species Polyonyx obesulus Miers, 1884
16. Species Polyonyx pedalis Nobili, 1906
17. Species Polyonyx pilosibrachium Osawa, Naruse & Ng, 2018
18. Species Polyonyx planus Osawa & Ng, 2016
19. Species Polyonyx quadratus Chace, 1956
20. Species Polyonyx sasekumari Osawa, Naruse & Ng, 2018
21. Species Polyonyx senegalensis Chace, 1956
22. Species Polyonyx similis Osawa, 2015
23. Species Polyonyx sinensis Stimpson, 1858
24. Species Polyonyx socialis Werding & Hiller, 2019
25. Species Polyonyx spina Osawa, 2007
26. Species Polyonyx splendidus Sankolli, 1966
27. Species Polyonyx thai Werding, 2001
28. Species Polyonyx transversus (Haswell, 1882)
29. Species Polyonyx triunguiculatus Zehntner, 1894
30. Species Polyonyx tulearis Werding, 2001
31. Species Polyonyx utinomii Miyake, 1943
32. Species Polyonyx vermicola Ng & Sasekumar, 1993
33. Species Polyonyx acutifrons De Man, 1896 accepted as Polyonyx triunguiculatus Zehntner, 1894 (unaccepted > junior subjective synonym)
34. Species Polyonyx asiaticus Shen, 1936 accepted as Polyonyx sinensis Stimpson, 1858 (unaccepted > junior subjective synonym)
35. Species Polyonyx bella Hsueh & Huang, 1998 accepted as Polyonyx sinensis Stimpson, 1858 (unaccepted > junior subjective synonym)
36. Species Polyonyx carinatus Ortmann, 1892 accepted as Pisidia dispar (Stimpson, 1858) (unaccepted > junior subjective synonym)
37. Species Polyonyx cometes Walker, 1887 accepted as Eulenaios cometes (Walker, 1887) (unaccepted > superseded combination)
38. Species Polyonyx denticulatus Paulson, 1875 accepted as Aliaporcellana suluensis (Dana, 1852) (unaccepted > junior subjective synonym)
39. Species Polyonyx hexagonalis Zehntner, 1894 accepted as Aliaporcellana suluensis (Dana, 1852) (unaccepted > junior subjective synonym)
40. Species Polyonyx parabiunguiculatus Yang, 1996 accepted as Polyonyx biunguiculatus (Dana, 1852) (unaccepted > junior subjective synonym)
41. Species Polyonyx parvidens Nobili, 1905 accepted as Polyonyx obesulus Miers, 1884 (unaccepted > junior subjective synonym)
42. Species Polyonyx paucidens Nobili, 1905 accepted as Polyonyx parvidens Nobili, 1905 accepted as Polyonyx obesulus Miers, 1884 (unaccepted > misspelling, incorrect spelling of junior synonym)
43. Species Polyonyx plumatus Yang & Xu, 1994 accepted as Polyonyx haigae McNeill, 1968 (unaccepted > junior subjective synonym)
44. Species Polyonyx pugilator Nobili, 1905 accepted as Aliaporcellana pygmaea (De Man, 1902) (unaccepted > junior subjective synonym)
45. Species Polyonyx pygmaeus (De Man, 1902) accepted as Aliaporcellana pygmaea (De Man, 1902) (unaccepted > superseded combination)
46. Species Polyonyx quadriungulatus Glassell, 1935 accepted as Polyonyx nitidus Lockington, 1878 (unaccepted > junior subjective synonym)
47. Species Polyonyx suluensis (Dana, 1852) accepted as Aliaporcellana suluensis (Dana, 1852) (unaccepted > superseded combination)
48. Species Polyonyx telestophilus Johnson, 1958 accepted as Aliaporcellana telestophila (Johnson, 1958) (unaccepted > superseded combination)

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