Arca tenuis Montagu, 1808 accepted as Ennucula tenuis (Montagu, 1808) (original description)
Bulla flexilis Montagu, 1808 accepted as Velutina plicatilis (O. F. Müller, 1776) (original description)
Cardium edentula Montagu, 1808 accepted as Cardium edentulum Montagu, 1808 accepted as Cardium groenlandicum Mohr, 1786 accepted as Serripes (Serripes) groenlandicus (Mohr, 1786) (original description)
Cardium edentulum Montagu, 1808 accepted as Cardium groenlandicum Mohr, 1786 accepted as Serripes (Serripes) groenlandicus (Mohr, 1786) (original description)
Cardium fasciatum Montagu, 1808 accepted as Parvicardium pinnulatum (Conrad, 1831) (original description)
Cypraea europaea Montagu, 1808 accepted as Trivia monacha (da Costa, 1778) (original description)
Doris nodosa Montagu, 1808 accepted as Goniodoris nodosa (Montagu, 1808) accepted as Okenia nodosa (Montagu, 1808) (original description)
Helix margarita Montagu, 1808 accepted as Margarites helicinus (Phipps, 1774) (original description)
Helix serpuloides Montagu, 1808 accepted as Skenea serpuloides (Montagu, 1808) (original description)
Ligula Montagu, 1808 accepted as Scrobicularia Schumacher, 1815 (original description)
Ligula prismatica Montagu, 1808 accepted as Abra prismatica (Montagu, 1808) (original description)
Ligula substriata Montagu, 1808 accepted as Montacuta substriata (Montagu, 1808) (original description)
Mactra cinerea Montagu, 1808 accepted as Mactra stultorum (Linnaeus, 1758) (original description)
Mactra minutissima Montagu, 1808 accepted as Goodallia triangularis (Montagu, 1803) (original description)
Mactra truncata Montagu, 1808 accepted as Spisula solida (Linnaeus, 1758) (original description)
Mya decussata Montagu, 1808 accepted as Petricola lithophaga (Retzius, 1788) (original description)
Mya ferruginosa Montagu, 1808 accepted as Tellimya ferruginosa (Montagu, 1808) (original description)
Mya purpurea Montagu, 1808 accepted as Turtonia minuta (O. Fabricius, 1780) (original description)
Mytilus decussatus Montagu, 1808 accepted as Crenella decussata (Montagu, 1808) (original description)
Nautilus inflatus Montagu, 1808 accepted as Trochammina inflata (Montagu, 1808) (original description)
Nerita rufa Montagu, 1808 accepted as Euspira montagui (Forbes, 1838) (original description)
Pecten subauriculatus Montagu, 1808 accepted as Limatula subauriculata (Montagu, 1808) (original description)
Turbo calathiscus Montagu, 1808 accepted as Alvania cimex (Linnaeus, 1758) (original description)
Turbo indistinctus Montagu, 1808 accepted as Parthenina indistincta (Montagu, 1808) (original description)
Turbo insculptus Montagu, 1808 accepted as Ondina divisa (J. Adams, 1797) (original description)
Turbo semistriatus Montagu, 1808 accepted as Crisilla semistriata (Montagu, 1808) (original description)
Venus compressa Montagu, 1808 accepted as Tridonta montagui (Dillwyn, 1817) (original description)
Venus danmonia Montagu, 1808 accepted as Astarte sulcata (da Costa, 1778) (original description)
Venus reflexa Montagu, 1808 accepted as Venus casina Linnaeus, 1758 (original description)
Voluta bidentata Montagu, 1808 accepted as Leucophytia bidentata (Montagu, 1808) (original description)