| Nominal Species (n = 122) | Present allocation (n = 27) | Ref. |
|---|---|---|
| Phascolosoma abnorme Sluiter, 1886 | Apionsoma pectinatum | 1840 |
| Physcosoma abyssorum Southern, 1913 | Phascolosoma capitatum | 1840 |
| Phascolosoma agassizii Keferstein, 1866 | Phascolosoma agassizii | 19 |
| Phascolosoma agassizii agassizii Keferstein, 1866 | Phascolosoma agassizii | 1840 |
| Phascolosoma albolineatum Baird, 1868 | Phascolosoma albolineatum | 1840 |
| Physcosoma ambonense Fischer, 1896 | Phascolosoma arcuatum | 1840 |
| Phascolosoma andamanensis Johnson, 1971 | Phascolosoma albolineatum | 1840 |
| Phascolosoma annulatum Hutton, 1879 | Phascolosoma annulatum | 1840 |
| Phascolosoma antillarum Grübe & Oersted, 1858 | Antillesoma antillarum | 1840 |
| Siphunculus arcuatus Gray, 1828 | Phascolosoma arcuatum | 1840 |
| Phascolosoma asperum Grübe, 1868 | Phascolosoma pacificum | 1840 |
| Phymosoma asser Selenka & de Man, 1883 | Antillesoma antillarum | 1840 |
| Phascolosoma carneum Leuckart & Rüppell, 1828 | Phascolosoma scolops | 1840 |
| Apionsoma claviformis Popkov, 1993 | Apionsoma murinae | 19 |
| Phymosoma deani Ikeda, 1905 | Phascolosoma arcuatum | 1840 |
| Phymosoma dentigerum Selenka & de Man, 1883 | Phascolosoma perlucens | 1840 |
| Phymosoma diaphanes Sluiter, 1886 | Phascolosoma nigrescens | 1840 |
| Phascolosoma dunwichi Edmonds, 1956 | Phascolosoma scolops | 1840 |
| Phymosoma duplicigranulatum Sluiter, 1886 | Phascolosoma nigrescens | 1840 |
| Physcosoma esculenta Chen & Yeh, 1958 | Phascolosoma arcuatum | 1840 |
| Physcosoma evisceratum Lanchester, 1905 | Phascolosoma nigrescens | 1840 |
| Physcosoma extortum Sluiter, 1902 | Phascolosoma nigrescens | 1840 |
| Phascolosoma fasciatum Baird, 1868 | Phascolosoma granulatum | 1840 |
| Sipunculus flavus Risso, 1826 | Phascolosoma granulatum | 1840 |
| Physcosoma formosense Satô, 1939 | Phascolosoma agassizii | 1840 |
| Physcosoma funafutiense Fischer, 1914 | Phascolosoma glabrum | 1840 |
| Physcosoma gaudens Lanchester, 1905 | Antillesoma antillarum | 1840 |
| Sipunculus genuensis de Blainville, 1827 | Phascolosoma granulatum | 1840 |
| Physcosoma glabrum Sluiter, 1902 | Phascolosoma glabrum | 1840 |
| Sipunculus glans de Quatrefages, 1865 | Antillesoma antillarum | 1840 |
| Physcosoma glaucum Satô, 1930 | Phascolosoma agassizii | 1840 |
| Phascolosoma golikova Murina, 1975 | Phascolosoma agassizii | 1840 |
| Phascolosoma granulatum Leuckart, 1828 | Phascolosoma granulatum | 19 |
| Phascolosoma grayi Baird, 1868 | Phascolosoma noduliferum | 1840 |
| Sipunculus guttatus de Quatrefages, 1865 | Phascolosoma scolops | 1840 |
| Phascolosoma hainanicum Chen, 1963 | Phascolosoma nigrescens | 3477 |
| Phascolosoma heronis Edmonds, 1956 | Phascolosoma stephensoni | 1840 |
| Physcosoma herouardi Hérubel, 1903 | Phascolosoma granulatum | 1840 |
| Phascolosoma hespera Chamberlain, 1920 | Apionsoma misakianum | 1840 |
| Physcosoma horsti ten Broeke, 1925 | Phascolosoma nigrescens | 1840 |
| Sipunculus immodestus de Quatrefages, 1865 | Antillesoma antillarum | 1840 |
| Aspidosiphon insularis Lanchester, 1905 | Phascolosoma perlucens | 1840 |
| Phascolosoma japonicum Ivanova, Nedashkovskaya, Zhukova, Nicolau, Christen & Mikhailov, 2003 | Phascolosoma japonicum | 82481 |
| Phascolosoma japonicum Grübe, 1877 | Phascolosoma agassizii | 1840 |
| Sipunculus javenensis de Quatrefages, 1865 | Phascolosoma noduliferum | 1840 |
| Phascolosoma jeffreysii Baird, 1868 | Phascolosoma granulatum | 1840 |
| Phascolosoma kapalum Edmonds, 1985 | Phascolosoma turnerae | 1840 |
| Physcosoma kurilense Satô, 1937 | Phascolosoma agassizii | 1840 |
| Phymosoma lacteum Sluiter, 1886 | Phascolosoma nigrescens | 1840 |
| Phascolosoma laeve Cuvier, 1830 | Phascolosoma granulatum | 1840 |
| Physcosoma lanzarotae Harms, 1921 | Phascolosoma granulatum | 1840 |
| Physcosoma lanzarotae Harms, 1921 | Phascolosoma stephensoni | 1840 |
| Sipunculus levis Cuvier, 1830 | Phascolosoma granulatum | 1840 |
| Phascolosoma lobostoma Fischer, 1895 | Phascolosoma lobostomum | 1840 |
| Phascolosoma lobostomum Fischer, 1895 | Phascolosoma lobostomum | 1840 |
| Golfingia longirostris Wesenburg-Lund, 1959 | Apionsoma misakianum | 1840 |
| Phascolosoma lordi Baird, 1868 | Phascolosoma agassizii | 1840 |
| Phascolosoma loveni Koren & Danielssen, 1877 | Phascolosoma granulatum | 1840 |
| Phymosoma lurco Selenka & de Man, 1883 | Phascolosoma arcuatum | 1840 |
| Phymosoma lurco malaccensis Selenka & de Man, 1883 | Phascolosoma arcuatum | 1840 |
| Phymosoma maculatum Sluiter, 1886 | Phascolosoma maculatum | 1840 |
| Phymosoma meteori Hérubel, 1904 | Phascolosoma meteori | 1840 |
| Physcosoma microdentigerum ten Broeke, 1925 | Phascolosoma perlucens | 1840 |
| Phymosoma microdontoton Sluiter, 1886 | Phascolosoma albolineatum | 1840 |
| Physcosoma minutum ten Broeke, 1925 | Phascolosoma nigrescens | 1840 |
| Phascolosoma misakianum Ikeda, 1904 | Apionsoma misakianum | 1840 |
| Golfingia mokyevskii Murina, 1964 | Antillesoma antillarum | 1840 |
| Phascolosoma multiannulata Wesenberg-Lund, 1954 | Phascolosoma albolineatum | 1840 |
| Phascolosoma multiannulata Wesenberg-Lund, 1954 | Phascolosoma glabrum | 1840 |
| Sipunculus multiorquatus de Quatrefages, 1865 | Phascolosoma granulatum | 1840 |
| Golfingia murinae bilobatae Cutler, 1969 | Apionsoma murinae | 1840 |
| Golfingia murinae unilobatae Cutler, 1969 | Apionsoma murinae | 1840 |
| Phymosoma nahaense Ikeda, 1904 | Phascolosoma scolops | 1840 |
| Phascolosoma nigrescens Keferstein, 1865 | Phascolosoma nigrescens | 1840 |
| Phascolosoma nigriceps Baird, 1868 | Antillesoma antillarum | 1840 |
| Phascolosoma noduliferum Stimpson, 1855 | Phascolosoma noduliferum | 19 |
| Sipunculus nodulosus de Quatrefages, 1865 | Phascolosoma noduliferum | 1840 |
| Phymosoma onomichianum Ikeda, 1904 | Antillesoma antillarum | 1840 |
| Phascolosoma pacificum Keferstein, 1866 | Phascolosoma pacificum | 19 |
| Sipunculus papillosum Thompson, 1840 | Phascolosoma granulatum | 1840 |
| Phascolosoma parvum Chen, 1963 | Phascolosoma parvum | 3477 |
| Phascolosoma pectinatum Keferstein, 1867 | Apionsoma pectinatum | 19 |
| Phymosoma pelma Selenka & de Man, 1883 | Antillesoma antillarum | 1840 |
| Phascolosoma pelmum Cutler, E.B. | Phascolosoma pelmum | 1871 |
| Phascolosoma perlucens Baird, 1868 | Phascolosoma perlucens | 19 |
| Phascolosoma planispinosum Baird, 1868 | Phascolosoma nigrescens | 1840 |
| Sipunculus plicatus de Quatrefages, 1865 | Phascolosoma nigrescens | 1840 |
| Phymosoma psaron Sluiter, 1886 | Phascolosoma scolops | 1840 |
| Phascolosoma puntarenae Grübe & Oersted, 1858 | Phascolosoma nigrescens | 1840 |
| Phascolosoma pusillum Sluiter, 1912 | Apionsoma trichocephalus | 1840 |
| Phascolosoma rhizophora Sluiter, 1891 | Phascolosoma arcuatum | 1840 |
| Siphonides rickettsi Fisher, 1952 | Apionsoma pectinatum | 1840 |
| Phascolosoma riukiuensis Murina, 1975 | Phascolosoma scolops | 1840 |
| Phascolosoma rottnesti Edmonds, 1956 | Phascolosoma scolops | 1840 |
| Phascolosoma saprophagicum Gibbs, 1987 | Phascolosoma saprophagicum | 19 |
| Golfingia savalovi Murina, 1974 | Phascolosoma capitatum | 1840 |
| Phascolosoma schmidti Murina, 1975 | Antillesoma antillarum | 1840 |
| Phymosoma scolops Selenka & de Man, 1883 | Phascolosoma scolops | 1840 |
| Physcosoma scolops tasmaniense Fischer, 1914 | Phascolosoma annulatum | 1840 |
| Physcosoma scolops var. adenticulatum Hérubel, 1904 | Phascolosoma scolops | 1840 |
| Phymosoma scolops var. mossabiciense Selenka, 1883 | Phascolosoma scolops | 1840 |
| Physcosoma similis Chen & Yeh, 1958 | Antillesoma antillarum | 1840 |
| Phascolosoma sinense Chen, 1963 | Phascolosoma sinense | 3477 |
| Physcosoma socium Lanchester, 1905 | Phascolosoma scolops | 1840 |
| Phymosoma spengeli Sluiter, 1886 | Phascolosoma nigrescens | 1840 |
| Sipunculus spinicauda de Quatrefages, 1865 | Phascolosoma stephensoni | 1840 |
| Phascolosoma spinosum Johnson, 1971 | Phascolosoma perlucens | 1840 |
| Physcosoma spongicola Sluiter, 1902 | Phascolosoma scolops | 1840 |
| Physcosoma stephensoni Stephen, 1942 | Phascolosoma stephensoni | 1840 |
| Golfingia tenuissima Wesenburg-Lund, 1959 | Apionsoma misakianum | 1840 |
| Physcosoma thomense Augener, 1903 | Phascolosoma perlucens | 1840 |
| Sipunculus tigrinus Risso, 1826 | Phascolosoma granulatum | 1840 |
| Apionsoma trichocephalus Sluiter, 1902 | Apionsoma trichocephalus | 1840 |
| Siphunculus tuberculatus Gray, 1828 | Phascolosoma noduliferum | 1840 |
| Phascolosoma turnerae Rice, 1985 | Phascolosoma turnerae | 19 |
| Phascolosoma uncatum Chen, 1963 | Phascolosoma nigrescens | 3477 |
| Phascolosoma varians Keferstein, 1865 | Phascolosoma nigrescens | 1840 |
| Sipunculus vermiculus de Quatrefages, 1865 | Phascolosoma perlucens | 1840 |
| Sipunculus verrucosus Cuvier, 1830 | Phascolosoma granulatum | 1840 |
| Phascolosoma wasini Lanchester, 1905 | Phascolosoma lobostomum | 1840 |
| Physcosoma weldoni Shipley, 1892 | Antillesoma antillarum | 1840 |
| Physcosoma yezoense Ikeda, 1924 | Phascolosoma agassizii | 1840 |