Scypha Gray, 1821 accepted as Sycon Risso, 1827 (original description)
Scypha botryoides (Ellis & Solander, 1786) accepted as Leucosolenia botryoides (Ellis & Solander, 1786) (new combination reference)
Scypha cancellata (Sowerby, 1806) accepted as Haliclona (Reniera) cinerea (Grant, 1826) (new combination reference)
Scypha complicata (Montagu, 1814) accepted as Leucosolenia complicata (Montagu, 1814) (new combination reference)
Scypha coronata (Ellis & Solander, 1786) accepted as Sycon ciliatum (Fabricius, 1780) (additional source)
Scypha foliacea (Montagu, 1814) accepted as Grantia compressa (Fabricius, 1780) (new combination reference)
Scypha laevigata (Montagu, 1814) (new combination reference)
Scypha ovata Gray, 1821 accepted as Leucandra ananas (Montagu, 1814) (new combination reference)
Scypha papillaris (Pallas, 1766) accepted as Halichondria (Halichondria) papillaris (Pallas, 1766) (new combination reference)
Scypha papillaris f. sowerbeii Gray, 1821 accepted as Halichondria (Halichondria) panicea (Pallas, 1766) (original description)
Scypha tubulosa (Linnaeus, 1759) accepted as Callyspongia (Callyspongia) tubulosa (Linnaeus, 1759) (new combination reference)
Spongia canalium Schröter, 1788 accepted as Spongilla lacustris (Linnaeus, 1759) (additional source)
Spongia crateriformis Pallas, 1766 accepted as Phakellia crateriformis (Pallas, 1766) (additional source)
Spongia infundibuliformis Linnaeus, 1759 accepted as Axinella infundibuliformis (Linnaeus, 1759) (additional source)
Spongia lichenoides Pallas, 1766 (additional source)
Spongilla pulvinata Lamarck, 1816 accepted as Ephydatia fluviatilis (Linnaeus, 1759) (source of synonymy)
Spongilla ramosa Lamarck, 1816 accepted as Spongilla lacustris (Linnaeus, 1759) (additional source)
Spongilla ramosa f. digitata Gray, 1821 accepted as Spongilla lacustris (Linnaeus, 1759) (original description)
Spongilla ramosa f. gracilis Gray, 1821 accepted as Spongilla lacustris (Linnaeus, 1759) (original description)
Tethya penicilliformis Gray in Gray, 1821 accepted as Polymastia penicillus (Montagu, 1814) (original description)
Tethya pilosa (Montagu, 1814) accepted as Craniella cranium (Müller, 1776) (basis of record)