Amphidesma siculum G. B. Sowerby I, 1833 accepted as Scrobicularia cottardii (Payraudeau, 1826) (basis of record)
Aplysia anguilla G. B. Sowerby I, 1869 (additional source)
Aplysia japonica G. B. Sowerby I, 1869 (additional source)
Astarte intermedia G. B. Sowerby II, 1854 accepted as Tridonta elliptica (T. Brown, 1827) (basis of record)
Astarte lactea Broderip & G. B. Sowerby I, 1829 accepted as Tridonta borealis Schumacher, 1817 (basis of record)
Astarte oblonga G. B. Sowerby II, 1854 accepted as Astarte crenata (J. E. Gray, 1824) (basis of record)
Astarte subaequilatera G. B. Sowerby II, 1854 (additional source)
Cancellaria costata G. B. Sowerby I, 1822 accepted as Bivetiella cancellata (Linnaeus, 1767) (basis of record)
Cancellaria taeniata G. B. Sowerby II, 1849 accepted as Tribia coronata (Scacchi, 1835) (basis of record)
Cardium australe G. B. Sowerby II, 1834 accepted as Fulvia australis (G. B. Sowerby II, 1834) (additional source)
Cardium ovale G. B. Sowerby II, 1840 accepted as Cerastoderma glaucum (Bruguière, 1789) (additional source)
Cardium siculum G. B. Sowerby II, 1834 accepted as Parvicardium subangulatum (Scacchi, 1833) (additional source)
Cardium turtoni G. B. Sowerby III, 1894 accepted as Papillicardium turtoni (G. B. Sowerby III, 1894) (basis of record)
Cerithium adenense G. B. Sowerby II, 1865 accepted as Cerithium scabridum R. A. Philippi, 1848 (basis of record)
Cerithium bifasciatum G. B. Sowerby II, 1855 accepted as Clypeomorus bifasciata (G. B. Sowerby II, 1855) (basis of record)
Cerithium nigropunctatum G. B. Sowerby II, 1855 accepted as Cerithium scabridum R. A. Philippi, 1848 (basis of record)
Cerithium recurvum G. B. Sowerby II, 1855 accepted as Rhinoclavis kochi (R. A. Philippi, 1848) (basis of record)
Cerithium subnodosum A. Adams, 1855 accepted as Cerithium alucastrum (Brocchi, 1814) (additional source)
Chiton concentricus G. B. Sowerby II, 1841 accepted as Lepidopleurus cajetanus (Poli, 1791) (additional source)
Clavagella aperta G. B. Sowerby I, 1823 accepted as Bryopa aperta (G. B. Sowerby I, 1823) (additional source)
Columbella broderipii G. B. Sowerby I, 1844 accepted as Mitrella broderipii (G. B. Sowerby I, 1844) (basis of record)
Cypraea achatidea J. E. Gray, 1837 accepted as Schilderina achatidea (J. E. Gray, 1837) (basis of record)
Cypraea multilirata G. B. Sowerby II, 1870 accepted as Trivia multilirata (G. B. Sowerby II, 1870) (basis of record)
Dentalium filum G. B. Sowerby II, 1860 accepted as Episiphon filum (G. B. Sowerby II, 1860) (basis of record)
Eulima anglica G. B. Sowerby I, 1834 accepted as Melanella alba (da Costa, 1778) (basis of record)
Eulima lineata G. B. Sowerby I, 1834 accepted as Eulima glabra (da Costa, 1778) (basis of record)
Eulima subangulata G. B. Sowerby I, 1834 accepted as Melanella alba (da Costa, 1778) (basis of record)
Fissurella mediterranea J. E. Gray, 1835 accepted as Diodora italica (Defrance, 1820) (additional source)
Fissurella ruppellii G. B. Sowerby I, 1835 accepted as Diodora ruppellii (G. B. Sowerby I, 1835) (additional source)
Fusus obesus G. B. Sowerby II, 1880 accepted as Colus islandicus (Mohr, 1786) (additional source)
Galeomma turtoni W. Turton, 1825 (additional source)
Hyalaea cumingii G. B. Sowerby II, 1877 accepted as Cavolinia tridentata (Forsskål, 1775) (additional source)
Hyalaea obtusa G. B. Sowerby II, 1877 accepted as Diacavolinia limbata (A. d'Orbigny, 1835) (additional source)
Leiostraca pyramidalis G. B. Sowerby II, 1866 (basis of record)
Lima aperta G. B. Sowerby II, 1843 accepted as Limaria hians (Gmelin, 1791) (basis of record)
Lima loscombi G. B. Sowerby I, 1823 accepted as Limaria loscombi (G. B. Sowerby I, 1823) (basis of record)
Lithodomus dactylus G. B. Sowerby I, 1824 accepted as Lithophaga lithophaga (Linnaeus, 1758) (basis of record)
Littorina planaxis G. B. Sowerby I, 1844 † accepted as Tectarius striatus (P. P. King, 1832) (basis of record)
Margarita acuminata G. B. Sowerby I, 1838 accepted as Solariella varicosa (Mighels & C. B. Adams, 1842) (additional source)
Margarita costellata G. B. Sowerby I, 1838 accepted as Margarites groenlandicus (Gmelin, 1791) (additional source)
Margarita sulcata G. B. Sowerby I, 1838 accepted as Margarites groenlandicus (Gmelin, 1791) (additional source)
Margarita umbilicalis Broderip & G. B. Sowerby I, 1829 accepted as Margarites groenlandicus umbilicalis (Broderip & G. B. Sowerby I, 1829) (additional source)
Margarita undulata G. B. Sowerby I, 1838 accepted as Margarites groenlandicus (Gmelin, 1791) (basis of record)
Marginella inflexa G. B. Sowerby II, 1846 accepted as Volvarina mitrella (Risso, 1826) (additional source)
Modiola ovalis G. B. Sowerby II, 1859 accepted as Gibbomodiola adriatica (Lamarck, 1819) accepted as Modiolus adriaticus Lamarck, 1819 (basis of record)
Monotigma G. B. Sowerby II, 1839 accepted as Monotygma G. B. Sowerby II, 1839 (source of synonymy)
Murex cataphractus G. B. Sowerby II, 1834 accepted as Muricopsis cristata (Brocchi, 1814) (basis of record)
Murex inconspicuus G. B. Sowerby II, 1841 accepted as Ocinebrina aciculata (Lamarck, 1822) (basis of record)
Murex megacerus G. B. Sowerby II, 1834 accepted as Hexaplex megacerus (G. B. Sowerby II, 1834) (basis of record)
Natica clausa Broderip & G. B. Sowerby I, 1829 accepted as Cryptonatica affinis (Gmelin, 1791) (basis of record)
Natica pallida Broderip & G. B. Sowerby I, 1829 accepted as Euspira pallida (Broderip & G. B. Sowerby I, 1829) (basis of record)
Nucula decussata G. B. Sowerby I, 1833 accepted as Nucula sulcata Bronn, 1831 (basis of record)
Nucula fabula G. B. Sowerby I, 1833 accepted as Lembulus pella (Linnaeus, 1758) (basis of record)
Nucula nitida G. B. Sowerby I, 1833 accepted as Nucula nitidosa Winckworth, 1930 (additional source)
Ostraea crenulifera G. B. Sowerby II, 1871 accepted as Dendostrea sandvichensis (G. B. Sowerby II, 1871) (additional source)
Ovulum adriaticum G. B. Sowerby I, 1828 accepted as Pseudosimnia adriatica (G. B. Sowerby I, 1828) (basis of record)
Ovulum apertum G. B. Sowerby II, 1849 accepted as Simnia aperta (G. B. Sowerby II, 1849) accepted as Xandarovula aperta (G. B. Sowerby II, 1849) (basis of record)
Ovulum secale G. B. Sowerby I, 1828 accepted as Simnia spelta (Linnaeus, 1758) (basis of record)
Pandora oblonga G. B. Sowerby I, 1830 (basis of record)
Pecten exasperatus G. B. Sowerby II, 1842 accepted as Lindapecten exasperatus (G. B. Sowerby II, 1842) (basis of record)
Pecten greenlandicus G. B. Sowerby II, 1842 accepted as Similipecten greenlandicus (G. B. Sowerby II, 1842) (basis of record)
Pecten noduliferus G. B. Sowerby II, 1842 accepted as Bractechlamys nodulifera (G. B. Sowerby II, 1842) (basis of record)
Pecten undulatus G. B. Sowerby II, 1842 accepted as Notochlamys hexactes (Lamarck, 1819) (basis of record)
Rissoina spirata (G. B. Sowerby I, 1833) (additional source)
Scalaria subnudata G. B. Sowerby II, 1874 accepted as Epitonium tenerum (H. Adams, 1873) (additional source)
Strombus fusiformis G. B. Sowerby II, 1842 accepted as Fusistrombus fusiformis (G. B. Sowerby II, 1842) (additional source)
Tapes acuminata G. B. Sowerby II, 1852 accepted as Venerupis aurea (Gmelin, 1791) accepted as Polititapes aureus (Gmelin, 1791) (additional source)
Trophon interstriatus G. B. Sowerby II, 1880 accepted as Scabrotrophon fabricii (Møller, 1842) (additional source)