| Nominal Species (n = 38) | Present allocation (n = 21) | Ref. |
|---|---|---|
| Isodictya alderi Bowerbank, 1866 | Amphilectus fucorum | 81807 |
| Spongia angulosa Lamarck, 1813 | Ulosa angulosa | 81807 |
| Amphilectus challengeri Ridley, 1885 | Esperiopsis challengeri | 81807 |
| Isodictya collina Bowerbank, 1882 | Amphilectus fucorum | 81807 |
| Esperiopsis desmophora Hooper & Lévi, 1988 | Esperiopsis desmophora | 3477 |
| Esperiopsis diasolenia Lévi, 1993 | Esperiopsis diasolenia | 3477 |
| Isodictya dubia Bowerbank, 1874 | Amphilectus fucorum | 81807 |
| Isodictya edwardii Bowerbank, 1866 | Amphilectus fucorum | 81807 |
| Esperiopsis flava Lévi, 1993 | Esperiopsis flava | 3477 |
| Spongia fucorum Esper, 1794 | Amphilectus fucorum | 81807 |
| Isodictya gracilis Bowerbank, 1866 | Amphilectus fucorum | 3477 |
| Isodictya hispida Bowerbank, 1882 | Amphilectus fucorum | 81807 |
| Isodictya imitata Bowerbank, 1874 | Amphilectus fucorum | 81807 |
| Esperiopsis incognita Stephens, 1916 | Esperiopsis incognita | 19 |
| Esperiopsis informis Stephens, 1915 | Amphilectus informis | 3477 |
| Esperiopsis inodes Lévi, 1993 | Esperiopsis inodes | 3477 |
| Isodictya invalida Bowerbank, 1874 | Amphilectus fucorum | 81807 |
| Isodictya involuta Bowerbank, 1882 | Amphilectus fucorum | 81807 |
| Esperiopsis laxa Lambe, 1893 | Amphilectus laxus | 3477 |
| Esperiopsis macrosigma Stephens, 1916 | Esperiopsis macrosigma | 19 |
| Esperiopsis magnifolia Lévi, 1993 | Esperiopsis magnifolia | 3477 |
| Isodictya normani Bowerbank, 1866 | Amphilectus fucorum | 81807 |
| Spongia parasitica Montagu, 1818 | Amphilectus fucorum | 81807 |
| Isodictya paupera Bowerbank, 1866 | Amphilectus fucorum | 81807 |
| Isodictya pertenuis Bowerbank, 1882 | Amphilectus fucorum | 81807 |
| Esperiopsis profunda Ridley & Dendy, 1886 | Esperiopsis profunda | 3477 |
| Esperiopsis pulchella Ridley & Dendy, 1886 | Esperiopsis pulchella | 19 |
| Ulosa rhoda de Laubenfels, 1957 | Ulosa rhoda | 19 |
| Esperiopsis rugosa Thiele, 1905 | Amphilectus rugosus | 3477 |
| Esperiopsis rugosa var. major Hentschel, 1914 | Amphilectus rugosus | 3477 |
| Esperiopsis schmidtii Arnesen, 1903 | Esperiopsis schmidtii | 19 |
| Isodictya scitula Bowerbank, 1882 | Amphilectus fucorum | 81807 |
| Ulosa spongia de Laubenfels, 1954 | Ulosa spongia | 19 |
| Stylissa stipitata De Laubenfels, 1961 | Semisuberites cribrosa | 19 |
| Esperiopsis stipula Koltun, 1958 | Esperiopsis stipula | 19 |
| Halichondria thompsoni Bowerbank, 1866 | Amphilectus fucorum | 81807 |
| Cribrochalina variabilis Vosmaer, 1882 | Semisuberites cribrosa | 3477 |
| Esperia villosa Carter, 1874 | Esperiopsis villosa | 75097 |