1. Subgenus Physcosoma (Phymosoma)
   1. Species Physcosoma (Phymosoma) scolops (Selenka & De Man, 1883) accepted as Phascolosoma (Phascolosoma) scolops (Selenka & de Man, 1883) (subsequent combination)
2. Species Physcosoma abyssorum Southern, 1913 accepted as Phascolosoma (Fisherana) capitatum (Gerould, 1913) (synonym)
3. Species Physcosoma agassizii (Keferstein, 1866) accepted as Phascolosoma (Phascolosoma) stephensoni (Stephen, 1942) (synonym)
4. Species Physcosoma albolineatum (Baird, 1868) accepted as Phascolosoma (Phascolosoma) albolineatum (Baird, 1868) (subsequent combination)
5. Species Physcosoma ambonense Fischer, 1896 accepted as Phascolosoma (Phascolosoma) arcuatum (Gray, 1828) (synonym)
6. Species Physcosoma antillarum (Grube, 1858) accepted as Antillesoma antillarum (Grube, 1858) (subsequent combination)
7. Species Physcosoma asser (Selenka & De Man, 1883) accepted as Antillesoma antillarum (Grube, 1858) (subsequent combination)
8. Species Physcosoma capitatum Gerould, 1913 accepted as Phascolosoma (Fisherana) capitatum (Gerould, 1913) (basionym)
9. Species Physcosoma corallicola ten Broeke, 1925 accepted as Phascolosoma corallicolum (ten Broeke, 1925) (synonym)
10. Species Physcosoma dentigerum (Selenka & De Man, 1883) accepted as Phascolosoma (Phascolosoma) perlucens Baird, 1868 (subsequent combination)
11. Species Physcosoma duplicigranulatum (Sluiter, 1886) accepted as Phascolosoma (Phascolosoma) nigrescens (Keferstein, 1865) (subsequent combination)
12. Species Physcosoma esculenta Chen & Yeh, 1958 accepted as Phascolosoma (Phascolosoma) arcuatum (Gray, 1828) (synonym)
13. Species Physcosoma evisceratum Lanchester, 1905 accepted as Phascolosoma (Phascolosoma) nigrescens (Keferstein, 1865) (synonym)
14. Species Physcosoma extortum Sluiter, 1902 accepted as Phascolosoma (Phascolosoma) nigrescens (Keferstein, 1865) (synonym)
15. Species Physcosoma formosense Satô, 1939 accepted as Phascolosoma (Phascolosoma) agassizii agassizii Keferstein, 1866 (synonym)
16. Species Physcosoma funafutiense Fischer, 1914 accepted as Phascolosoma (Phascolosoma) glabrum glabrum (Sluiter, 1902) (synonym)
17. Species Physcosoma gaudens Lanchester, 1905 accepted as Antillesoma antillarum (Grube, 1858) (synonym)
18. Species Physcosoma glabrum Sluiter, 1902 accepted as Phascolosoma (Phascolosoma) glabrum glabrum (Sluiter, 1902) (basionym)
19. Species Physcosoma glaucum Satô, 1930 accepted as Phascolosoma (Phascolosoma) agassizii agassizii Keferstein, 1866 (synonym)
20. Species Physcosoma granulatum (Leuckart, 1828) accepted as Phascolosoma (Phascolosoma) granulatum Leuckart, 1828 (subsequent combination)
21. Species Physcosoma hebes Sluiter, 1902 accepted as Siphonosoma cumanense (Keferstein, 1867) (synonym)
22. Species Physcosoma horsti ten Broeke, 1925 accepted as Phascolosoma (Phascolosoma) nigrescens (Keferstein, 1865) (synonym)
23. Species Physcosoma japonicum (Grube, 1877) accepted as Phascolosoma (Phascolosoma) noduliferum Stimpson, 1855 (synonym)
24. Species Physcosoma kurilense Satô, 1937 accepted as Phascolosoma (Phascolosoma) agassizii kurilense (Satô, 1937) (basionym)
25. Species Physcosoma lacteum (Sluiter, 1886) accepted as Phascolosoma (Phascolosoma) nigrescens (Keferstein, 1865) (subsequent combination)
26. Species Physcosoma lanzarotae Harms, 1921 accepted as Phascolosoma (Phascolosoma) stephensoni (Stephen, 1942) (synonym)
27. Species Physcosoma loveni (Koren & Danielssen, 1876) accepted as Phascolosoma (Phascolosoma) granulatum Leuckart, 1828 (spelling variation)
28. Species Physcosoma lovenii (Koren & Danielssen, 1876) accepted as Phascolosoma (Phascolosoma) granulatum Leuckart, 1828 (subsequent combination)
29. Species Physcosoma lurco Selenka & De Man in Selenka, de Man & Bülow, 1883 accepted as Phascolosoma (Phascolosoma) arcuatum (Gray, 1828) (subsequent combination)
30. Species Physcosoma maculatum (Sluiter, 1886) accepted as Phascolosoma (Phascolosoma) maculatum (Sluiter, 1886) (subsequent combination)
31. Species Physcosoma meteori (Hérubel, 1904) accepted as Phascolosoma (Phascolosoma) meteori (Hérubel, 1904) (Subsequent combination)
32. Species Physcosoma microdentigerum ten Broeke, 1925 accepted as Phascolosoma (Phascolosoma) perlucens Baird, 1868 (synonym)
33. Species Physcosoma minutum ten Broeke, 1925 accepted as Phascolosoma (Phascolosoma) nigrescens (Keferstein, 1865) (synonym)
34. Species Physcosoma nahaense Ikeda, 1904 accepted as Phascolosoma (Phascolosoma) scolops (Selenka & de Man, 1883) (synonym)
35. Species Physcosoma nigrescens (Keferstein, 1865) accepted as Phascolosoma (Phascolosoma) nigrescens (Keferstein, 1865) (subsequent combination)
36. Species Physcosoma onomichianum (Ikeda, 1904) accepted as Antillesoma antillarum (Grube, 1858) (subsequent combination)
37. Species Physcosoma pacifica (Keferstein, 1866) accepted as Phascolosoma (Phascolosoma) pacificum Keferstein, 1866 (spelling variation)
38. Species Physcosoma pacificum (Keferstein, 1866) accepted as Phascolosoma (Phascolosoma) pacificum Keferstein, 1866 (subsequent combination)
39. Species Physcosoma pectinatum (Keferstein, 1867) accepted as Apionsoma (Edmondsius) pectinatum (Keferstein, 1867) (unaccepted > superseded combination, superseded subsequent combination)
40. Species Physcosoma pelma (Selenka & De Man, 1883) accepted as Antillesoma antillarum (Grube, 1858) (subsequent combination)
41. Species Physcosoma psaron (Sluiter, 1886) accepted as Phascolosoma (Phascolosoma) scolops (Selenka & de Man, 1883) (synonym)
42. Species Physcosoma scolops (Selenka & de Man, 1883) accepted as Phascolosoma (Phascolosoma) stephensoni (Stephen, 1942) (synonym)
43. Species Physcosoma similis Chen & Yeh, 1958 accepted as Antillesoma antillarum (Grube, 1858) (synonym)
44. Species Physcosoma socium Lanchester, 1905 accepted as Phascolosoma (Phascolosoma) scolops (Selenka & de Man, 1883) (synonym)
45. Species Physcosoma spengeli (Sluiter, 1886) accepted as Phascolosoma (Phascolosoma) nigrescens (Keferstein, 1865) (subsequent combination)
46. Species Physcosoma spongicola Sluiter, 1902 accepted as Phascolosoma (Phascolosoma) scolops (Selenka & de Man, 1883) (synonym)
47. Species Physcosoma stephensoni Stephen, 1942 accepted as Phascolosoma (Phascolosoma) stephensoni (Stephen, 1942) (Original combination)
48. Species Physcosoma thomense Augener, 1903 accepted as Phascolosoma (Phascolosoma) perlucens Baird, 1868 (synonym)
49. Species Physcosoma varians (Keferstein, 1865) accepted as Phascolosoma (Phascolosoma) nigrescens (Keferstein, 1865) (subsequent combination)
50. Species Physcosoma weldonii Shipley, 1892 accepted as Antillesoma antillarum (Grube, 1858) (synonym)
51. Species Physcosoma yezoense Ikeda, 1924 accepted as Phascolosoma (Phascolosoma) agassizii agassizii Keferstein, 1866 (synonym)
52. Species Physcosoma ruppelli (uncertain > taxon inquirendum)

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