| Synonym | Author | CoL Status | Valid | Synonymy | Combination |
|---|---|---|---|---|---|
| Alcyonium manusdiaboli | Esper, 1794 | synonym | No | junior synonym |
original combination |
| Alcyonium medullare | Lamarck, 1815 | synonym | No | junior synonym |
original combination |
| Amorphina appendiculata | Schmidt, 1875 | synonym | No | junior synonym |
original combination |
| Amorphina grisea | Fristedt, 1887 | synonym | No | junior synonym |
original combination |
| Amorphina paciscens | Schmidt, 1875 | synonym | No | junior synonym |
original combination |
| Halichondria albescens | Rafinesque, 1818 | synonym | No | junior synonym |
original combination |
| Halichondria ambigua | Bowerbank, 1874 | synonym | No | junior synonym |
original combination |
| Halichondria bretti | Bowerbank, 1866 | synonym | No | junior synonym |
original combination |
| Halichondria caduca | Bowerbank, 1866 | synonym | No | junior synonym |
original combination |
| Halichondria coccinea | Bowerbank, 1861 | synonym | No | junior synonym |
original combination |
| Halichondria coralloides | Bowerbank, 1882 | synonym | No | junior synonym |
original combination |
| Halichondria edusa | Bowerbank, 1874 | synonym | No | junior synonym |
original combination |
| Halichondria firmus | (Bowerbank, 1874) | synonym | No | junior synonym |
new combination |
| Halichondria glabra | Bowerbank, 1866 | synonym | No | junior synonym |
original combination |
| Halichondria incerta | Bowerbank, 1866 | synonym | No | junior synonym |
original combination |
| Halichondria lactea | (Bowerbank, 1866) | synonym | No | junior synonym |
new combination |
| Halichondria panicea | (Pallas, 1766) | accepted name | Yes | senior synonym |
new combination |
| Halichondria pannosus | Verrill, 1874 | synonym | No | junior synonym |
original combination |
| Halichondria papillaris | (Linnaeus (Gmelin), 1791) | synonym | No | junior synonym |
new combination |
| Halichondria reticulata | Lieberkühn, 1859 | synonym | No | junior synonym |
original combination |
| Halichondria sevosa | Johnston, 1842 | synonym | No | junior synonym |
original combination |
| Halichondriella corticata | Burton, 1931 | synonym | No | junior synonym |
original combination |
| Halina panicea | (Pallas, 1766) | synonym | No | senior synonym |
new combination |
| Hymeniacidon fallaciosus | Bowerbank, 1866 | synonym | No | junior synonym |
original combination |
| Hymeniacidon firmus | Bowerbank, 1874 | synonym | No | junior synonym |
original combination |
| Hymeniacidon fragilis | Bowerbank, 1866 | synonym | No | junior synonym |
original combination |
| Hymeniacidon lactea | Bowerbank, 1866 | synonym | No | junior synonym |
original combination |
| Hymeniacidon membrana | Bowerbank, 1866 | synonym | No | junior synonym |
original combination |
| Hymeniacidon parfitti | Parfitt, 1868 | synonym | No | junior synonym |
original combination |
| Hymeniacidon reticulata | Bowerbank, 1866 | synonym | No | junior synonym |
original combination |
| Hymeniacidon solida | Bowerbank, 1874 | synonym | No | junior synonym |
original combination |
| Hymeniacidon tegeticula | Bowerbank, 1874 | synonym | No | junior synonym |
original combination |
| Hymeniacidon thomasii | Bowerbank, 1866 | synonym | No | junior synonym |
original combination |
| Isodictya crassa | Bowerbank, 1882 | synonym | No | junior synonym |
original combination |
| Isodictya perplexa | Bowerbank, 1882 | synonym | No | junior synonym |
original combination |
| Menanetia minchini | Topsent, 1896 | synonym | No | junior synonym |
original combination |
| Microciona tumulosa | Bowerbank, 1882 | synonym | No | junior synonym |
original combination |
| Pellina bibula | Schmidt, 1870 | synonym | No | junior synonym |
original combination |
| Spongia compacta | Sowerby, 1806 | synonym | No | junior synonym |
original combination |
| Spongia cristata | Ellis & Solander, 1786 | synonym | No | junior synonym |
original combination |
| Spongia panicea | Pallas, 1766 | synonym | No | senior synonym |
original combination |
| Spongia seriata | Grant, 1826 | synonym | No | junior synonym |
original combination |
| Spongia tomentosa | Linnaeus, 1767 | synonym | No | junior synonym |
original combination |
| Spongia urens | Ellis & Solander, 1786 | synonym | No | junior synonym |
original combination |
| Trachyopsilla glaberrima | Burton, 1931 | synonym | No | junior synonym |
original combination |