1. Subgenus Psolus (Hypopsolus)
   1. Species Psolus (Hypopsolus) ambulator Bell, 1883 accepted as Ceto cuvieria (Cuvier, 1817)
2. Subgenus Psolus (Lophothuria)
   1. Species Psolus (Lophothuria) peronii Bell, 1883 accepted as Psolus peronii Bell, 1883
3. Species Psolus agulhasicus Ludwig & Heding, 1935
4. Species Psolus antarcticus (Philippi, 1857)
5. Species Psolus arnaudi Cherbonnier, 1974
6. Species Psolus ascidiiformis Mitsukuri, 1912
7. Species Psolus atlantis O'Loughlin in O'Loughlin et al., 2013
8. Species Psolus belgicae Hérouard, 1901
9. Species Psolus byrdae O'Loughlin & Whitfield, 2010
10. Species Psolus capensis Ludwig & Heding, 1935
11. Species Psolus carolineae O'Loughlin & Whitfield, 2010
12. Species Psolus cherbonnieri Carriol & Féral, 1985
13. Species Psolus chitonoides Clark, 1901
14. Species Psolus complicatus Deichmann, 1930
15. Species Psolus depressus Ludwig & Heding, 1935
16. Species Psolus digitatus Ludwig, 1893
17. Species Psolus diomedeae Ludwig, 1893
18. Species Psolus dubiosus Ludwig & Heding, 1935
19. Species Psolus ephippifer Thomson, 1876
20. Species Psolus eximius Savel'eva, 1941
21. Species Psolus fabricii (Düben & Koren, 1846)
22. Species Psolus figulus Ekman, 1925
23. Species Psolus fimbriatus Sluiter, 1901
24. Species Psolus granulosus Vaney, 1906
25. Species Psolus griffithsi Thandar, 2009
26. Species Psolus heardi O'Loughlin & Skarbnik-López in O'Loughlin et al., 2015
27. Species Psolus hypsinotus Heding, 1942
28. Species Psolus imperfectus H.L. Clark, 1923
29. Species Psolus japonicus Östergren, 1898
30. Species Psolus lawrencei Martinez & Penchaszadeh, 2017
31. Species Psolus levis Koehler & Vaney, 1905
32. Species Psolus lockhartae O'Loughlin & Whitfield, 2010
33. Species Psolus macquariensis Davey & Whitfield, 2013
34. Species Psolus macrolepis Fisher, 1907
35. Species Psolus mannarensis James, 1984
36. Species Psolus megaloplax Pawson, 1968
37. Species Psolus membranaceus Koehler & Vaney, 1905
38. Species Psolus nummularis Perrier R., 1899
39. Species Psolus operculatus (Pourtalès, 1868)
40. Species Psolus paradubiosus Carriol & Féral, 1985
41. Species Psolus parantarcticus Mackenzie & Whitfield, 2011
42. Species Psolus parvulus Cherbonnier, 1974
43. Species Psolus patagonicus Ekman, 1925
44. Species Psolus pauper Ludwig, 1893
45. Species Psolus pawsoni Miller & Turner, 1986
46. Species Psolus peronii Bell, 1883
47. Species Psolus phantapus (Strussenfelt, 1765)
48. Species Psolus pourtalesi Théel, 1886
49. Species Psolus propinquus Sluiter, 1901
50. Species Psolus punctatus Ekman, 1925
51. Species Psolus rufus Fernández-Rodríguez, Arias, Borrell, Anadón, Massin & Acuña, 2017
52. Species Psolus salottii Mackenzie & Whitfield, 2011
53. Species Psolus segregatus Perrier, 1905
54. Species Psolus solidus Massin, 1987
55. Species Psolus springthorpei Mackenzie & Whitfield, 2011
56. Species Psolus squamatus (O.F. Müller, 1776)
57. Species Psolus steuarti Mackenzie & Whitfield, 2011
58. Species Psolus tessellatus Koehler, 1896
59. Species Psolus tropicus Cherbonnier, 1966
60. Species Psolus tuberculosus Théel, 1886
61. Species Psolus vitoriae Tommasi, 1971
62. Species Psolus appendiculatus (de Blainville, 1821) accepted as Psolidium appendiculatus (de Blainville, 1821) (superseded combination)
63. Species Psolus arnoudi Cherbonnier, 1973 accepted as Psolus arnaudi Cherbonnier, 1974 (misdated)
64. Species Psolus asper Augustin, 1908 accepted as Psolus squamatus (O.F. Müller, 1776)
65. Species Psolus boholensis Semper, 1867 accepted as Psolidium boholensis (Semper, 1867)
66. Species Psolus braziliensis Théel, 1886 accepted as Lissothuria braziliensis (Théel, 1886)
67. Species Psolus buchannani Domantay, 1953 (unaccepted > nomen nudum)
68. Species Psolus californicus Fisher, 1905 accepted as Psolus chitinoides Clark, 1901 accepted as Psolus chitonoides Clark, 1901
69. Species Psolus charcoti Vaney, 1906 accepted as Echinopsolus charcoti (Vaney, 1906)
70. Species Psolus chitinoides Clark, 1901 accepted as Psolus chitonoides Clark, 1901 (misspelling)
71. Species Psolus complanatus Semper, 1867 accepted as Psolidium complanatum (Semper, 1867)
72. Species Psolus conchae Caso, 1968 accepted as Psolus diomedeae Ludwig, 1893
73. Species Psolus disciformis Théel, 1886 accepted as Psolidium disciformis (Théel, 1886)
74. Species Psolus granulatus Grube, 1840 accepted as Phyllophorus (Phyllophorus) granulatus (Grube, 1840) (synonym)
75. Species Psolus granulatus Ayres, 1851 accepted as Psolus phantapus (Strussenfelt, 1765) (synonym)
76. Species Psolus incertus Théel, 1886 accepted as Psolidium poriferum (Studer, 1876)
77. Species Psolus koehleri Vaney, 1914 accepted as Echinopsolus koehleri (Vaney, 1914)
78. Species Psolus laevigatus Ayres, 1851 accepted as Psolus phantapus (Strussenfelt, 1765) (synonym)
79. Species Psolus macquariensis Dendy, 1897 accepted as Pseudopsolus macquariensis (Dendy, 1897)
80. Species Psolus marcusi Tommasi, 1971 accepted as Psolus patagonicus Ekman, 1925 (junior synonym)
81. Species Psolus minutus H.L. Clark, 1938 accepted as Psolidium minutum (H.L. Clark, 1938)
82. Species Psolus murrayi Théel, 1886 accepted as Echinopsolus murrayi (Théel, 1886) (unaccepted > superseded combination)
83. Species Psolus neozelanicus Mortensen, 1925 accepted as Psolus antarcticus (Philippi, 1857)
84. Species Psolus parmatus Sluiter, 1901 accepted as Psolidium parmatum (Sluiter, 1901)
85. Species Psolus pourtalesii Théel, 1886 accepted as Psolus pourtalesi Théel, 1886
86. Species Psolus regalis Verrill, 1866 accepted as Psolus phantapus (Strussenfelt, 1765) (synonym)
87. Species Psolus sadko D'yakonov, 1946 accepted as Psolus peronii Bell, 1883
88. Species Psolus spinuliferus Clark, 1938 accepted as Psolidium spinuliferum (Clark, 1938)
89. Species Psolus valvatus Östergren, 1904 accepted as Psolus squamatus (O.F. Müller, 1776) (synonym)

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