1. Species Pachychalina acapulcensis Wilson, 1904
2. Species Pachychalina alcaloidifera Pinheiro, Berlinck & Hajdu, 2005
3. Species Pachychalina alveolopora Topsent, 1906
4. Species Pachychalina arctica (Miklucho-Maclay, 1870)
5. Species Pachychalina erinacea Goodwin, Jones, Neely & Brickle, 2011
6. Species Pachychalina fracta Hentschel, 1929
7. Species Pachychalina glacialis (Burton, 1934)
8. Species Pachychalina lupusapia Bispo, Willenz & Hajdu, 2022
9. Species Pachychalina mollis (Topsent, 1897)
10. Species Pachychalina rustica Schmidt, 1868
11. Species Pachychalina schmidti Lundbeck, 1902
12. Species Pachychalina subcapitata (Lévi, 1961)
13. Species Pachychalina tenera Thiele, 1905
14. Species Pachychalina affinis Brøndsted, 1924 accepted as Callyspongia (Callyspongia) nuda (Ridley, 1884) (genus transfer & junior synonym)
15. Species Pachychalina anomala Sarà, 1978 accepted as Amphimedon anomala (Sarà, 1978) (genus transfer)
16. Species Pachychalina areolata Wilson, 1902 accepted as Niphates erecta Duchassaing & Michelotti, 1864 (junior synonym)
17. Species Pachychalina aurantiaca (Lendenfeld, 1887) accepted as Callyspongia aurantiaca (Lendenfeld, 1887) (genus transfer)
18. Species Pachychalina bilamellata (Lamarck, 1814) accepted as Callyspongia (Cavochalina) bilamellata (Lamarck, 1814)
19. Species Pachychalina brevispiculifera Dendy, 1905 accepted as Amphimedon brevispiculifera (Dendy, 1905) (genus transfer)
20. Species Pachychalina carbonaria (Lamarck, 1814) accepted as Neopetrosia carbonaria (Lamarck, 1814) (genus transfer)
21. Species Pachychalina caulifera Vosmaer, 1882 accepted as Isodictya palmata (Ellis & Solander, 1786) (genus transfer & junior synonym)
22. Species Pachychalina cellulosa Verrill, 1907 accepted as Amphimedon cellulosa (Verrill, 1907) (genus transfer)
23. Species Pachychalina claviformis (Carter, 1886) accepted as Chalinula claviformis (Carter, 1886)
24. Species Pachychalina compressa Schmidt, 1870 accepted as Isodictya palmata (Ellis & Solander, 1786) (genus transfer and junior synonym)
25. Species Pachychalina conica Brøndsted, 1924 accepted as Callyspongia brondstedi Van Soest & Hooper, 2020 (genus transfer and preoccupied)
26. Species Pachychalina conulosa Kieschnick, 1898 accepted as Callyspongia conulosa (Kieschnick, 1898) (genus transfer)
27. Species Pachychalina decurtata Sarà, 1978 accepted as Amphimedon decurtata (Sarà, 1978) (genus transfer)
28. Species Pachychalina delicatula Dendy, 1889 accepted as Amphimedon delicatula (Dendy, 1889) (genus transfer)
29. Species Pachychalina densa Brøndsted, 1924 accepted as Chalinula densa (Brøndsted, 1924) (genus transfer)
30. Species Pachychalina diffusa (Ridley, 1884) accepted as Callyspongia (Cladochalina) diffusa (Ridley, 1884) (genus transfer)
31. Species Pachychalina dura Wilson, 1902 accepted as Cribrochalina dura (Wilson, 1902) (genus transfer)
32. Species Pachychalina elastica Verrill, 1907 accepted as Amphimedon elastica (Verrill, 1907) (genus transfer)
33. Species Pachychalina elegans Lendenfeld, 1887 accepted as Callyspongia (Callyspongia) nuda (Ridley, 1884) (genus transfer and junior synonym)
34. Species Pachychalina elongata Ridley & Dendy, 1886 accepted as Callyspongia (Callyspongia) serpentina (Lamarck, 1814) (genus transfer & junior synonym)
35. Species Pachychalina excelsa Schmidt, 1870 accepted as Isodictya palmata (Ellis & Solander, 1786) (genus transfer)
36. Species Pachychalina fibrillosa (Esper, 1794) accepted as Spongia fibrillosa sensu Esper, 1794 (reverted genus transfer)
37. Species Pachychalina fibrosa (Ridley & Dendy, 1886) accepted as Callyspongia (Cladochalina) fibrosa (Ridley & Dendy, 1886) (genus transfer)
38. Species Pachychalina fragilis (Ridley & Dendy, 1886) accepted as Dasychalina fragilis Ridley & Dendy, 1886
39. Species Pachychalina furcata Keller, 1889 accepted as Niphates furcata (Keller, 1889) (genus transfer)
40. Species Pachychalina gracilenta (Bowerbank, 1866) accepted as Chalinula limbata (Montagu, 1814) (genus transfer)
41. Species Pachychalina gracilis (Miklucho-Maclay, 1870) accepted as Haliclona gracilis (Miklucho-Maclay, 1870) (genus transfer)
42. Species Pachychalina hospitalis Stephens, 1915 accepted as Callyspongia hospitalis (Stephens, 1915) (genus transfer)
43. Species Pachychalina joubini Topsent, 1897 accepted as Callyspongia joubini (Topsent, 1897) (genus transfer)
44. Species Pachychalina limbata (Montagu, 1814) accepted as Chalinula limbata (Montagu, 1814) (genus transfer)
45. Species Pachychalina lobata Ridley, 1884 accepted as Callyspongia lobata (Ridley, 1884) (genus transfer)
46. Species Pachychalina lunae Brøndsted, 1924 accepted as Callyspongia (Callyspongia) nuda (Ridley, 1884) (genus transfer & junior synonym)
47. Species Pachychalina macrodactyla Ridley, 1884 accepted as Callyspongia macrodactyla (Ridley, 1884) (genus transfer)
48. Species Pachychalina macrospina Lendenfeld, 1887 accepted as Callyspongia (Callyspongia) nuda (Ridley, 1884) (genus transfer & junior synonym)
49. Species Pachychalina magellanica Thiele, 1905 accepted as Dasychalina magellanica (Thiele, 1905) (genus transfer)
50. Species Pachychalina manus Lendenfeld, 1887 accepted as Callyspongia (Cladochalina) diffusa (Ridley, 1884)
51. Species Pachychalina maresi Sarà, 1978 accepted as Amphimedon maresi (Sarà, 1978) (genus transfer)
52. Species Pachychalina megalorrhaphis Ridley & Dendy, 1886 accepted as Callyspongia megalorrhaphis (Ridley & Dendy, 1886) (genus transfer)
53. Species Pachychalina melior (Ridley & Dendy, 1886) accepted as Dasychalina melior Ridley & Dendy, 1886 (reverted genus transfer)
54. Species Pachychalina micropora Verrill, 1907 accepted as Amphimedon micropora (Verrill, 1907) (genus transfer)
55. Species Pachychalina mollis Wilson, 1902 accepted as Amphimedon mollis (Wilson, 1902) (genus transfer)
56. Species Pachychalina montaguii (Fleming, 1828) accepted as Haliclona (Reniera) cinerea (Grant, 1826)
57. Species Pachychalina monticulosa Verrill, 1907 accepted as Ulosa monticulosa (Verrill, 1907) (genus transfer)
58. Species Pachychalina multiformis (Lendenfeld, 1887) accepted as Callyspongia (Callyspongia) nuda (Ridley, 1884) (genus transfer and junior synonym)
59. Species Pachychalina nigra Baer, 1906 accepted as Iotrochota nigra (Baer, 1906) (genus transfer)
60. Species Pachychalina oculata Lendenfeld, 1887 accepted as Callyspongia (Callyspongia) nuda (Ridley, 1884) (genus transfer and junior synonym)
61. Species Pachychalina odessana Kudelin, 1910 accepted as Haliclona odessana (Kudelin, 1910) (genus transfer)
62. Species Pachychalina paucispina Lendenfeld, 1887 accepted as Callyspongia (Callyspongia) nuda (Ridley, 1884) (genus transfer and junior synonym)
63. Species Pachychalina pedunculata Ridley & Dendy, 1886 accepted as Haliclona pedunculata (Ridley & Dendy, 1886) (genus transfer)
64. Species Pachychalina punctata Ridley & Dendy, 1886 accepted as Cribrochalina punctata (Ridley & Dendy, 1886) (genus transfer)
65. Species Pachychalina punctata Whitelegge, 1889 accepted as Callyspongia (Cavochalina) bilamellata (Lamarck, 1814) (genus transfer and junior synonym)
66. Species Pachychalina ramulosa Lendenfeld, 1887 accepted as Callyspongia (Callyspongia) nuda (Ridley, 1884) (genus transfer and junior synonym)
67. Species Pachychalina reticulosa Thiele, 1905 accepted as Amphimedon reticulosa (Thiele, 1905) (genus transfer)
68. Species Pachychalina rigida Lendenfeld, 1887 accepted as Callyspongia (Callyspongia) nuda (Ridley, 1884) (genus transfer and junior synonym)
69. Species Pachychalina rubens (Pallas, 1766) accepted as Amphimedon compressa Duchassaing & Michelotti, 1864 (genus transfer and junior synonym)
70. Species Pachychalina rugosa (Duchassaing & Michelotti, 1864) accepted as Neopetrosia subtriangularis (Duchassaing, 1850) (genus transfer & junior synonym)
71. Species Pachychalina spinifera (Carter, 1887) accepted as Callyspongia (Cladochalina) spinifera (Carter, 1887) (genus transfer)
72. Species Pachychalina spinilamella Dendy, 1889 accepted as Callyspongia (Cladochalina) spinilamella (Dendy, 1889) (genus transfer)
73. Species Pachychalina spinosissima Dendy, 1887 accepted as Callyspongia (Cladochalina) spinosissima (Dendy, 1887) (genus transfer)
74. Species Pachychalina spinulosa Lendenfeld, 1887 accepted as Callyspongia spinulosa (Lendenfeld, 1887) (genus transfer)
75. Species Pachychalina subcylindrica Dendy, 1905 accepted as Amphimedon subcylindrica (Dendy, 1905) (genus transfer)
76. Species Pachychalina tenella (Lendenfeld, 1887) accepted as Haliclona tenella (Lendenfeld, 1887) (genus transfer)
77. Species Pachychalina tubulifera Lindgren, 1897 accepted as Callyspongia tubulifera (Lindgren, 1897) (genus transfer)
78. Species Pachychalina validissima Thiele, 1905 accepted as Dasychalina validissima (Thiele, 1905) (genus transfer)
79. Species Pachychalina variabilis Dendy, 1887 accepted as Amphimedon complanata (Duchassaing, 1850) (genus transfer and junior synonym)

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