Acmaea virginea (O. F. Müller, 1776) accepted as Tectura virginea (O. F. Müller, 1776) (additional source)
Cancellariidae Forbes & Hanley, 1851 (original description)
Cerithiopsis Forbes & Hanley, 1850 (original description)
Chemnitzia jeffreysii Forbes & Hanley, 1850 accepted as Pyrgiscus jeffreysii (Jeffreys, 1848) (original description)
Chiton laevis Pennant, 1777 sensu Montagu, 1803 accepted as Callochiton septemvalvis (Montagu, 1803) (additional source)
Emarginula muelleri Forbes & Hanley, 1849 accepted as Emarginula fissura (Linnaeus, 1758) (original description)
Eolidia cristata (Delle Chiaje, 1841) accepted as Janolus cristatus (Delle Chiaje, 1841) accepted as Antiopella cristata (Delle Chiaje, 1841) (basis of record)
Eulima distorta (Defrance, 1823) sensu R. A. Philippi, 1836 accepted as Vitreolina philippi (de Rayneval & Ponzi, 1854) (basis of record)
Eulima distorta var. gracilis Forbes & Hanley, 1853 accepted as Melanella monterosatoi (Monterosato, 1890) (original description)
Fiona Alder & Hancock, 1853 (original description)
Jeffreysia Alder, 1850 accepted as Rissoella J. E. Gray, 1847 (original description)
Jeffreysia globularis Forbes & Hanley, 1853 accepted as Rissoella globularis (Forbes & Hanley, 1853) (original description)
Kelliidae Forbes & Hanley, 1848 accepted as Lasaeidae J. E. Gray, 1842 (original description)
Leda pygmaea (Münster, 1837) sensu Forbes & Hanley, 1849 accepted as Yoldiella philippiana (Nyst, 1845) (basis of record)
Lima sulcata T. Brown, 1827 accepted as Limatula subauriculata (Montagu, 1808) (source of synonymy)
Litorina tenebrosa var. intermedia Forbes & Hanley, 1850 accepted as Littorina saxatilis (Olivi, 1792) (original description)
Littorina saxatilis var. intermedia Forbes & Hanley, 1850 accepted as Littorina saxatilis (Olivi, 1792) (original description)
Lucinopsis Forbes & Hanley, 1848 accepted as Mysia Lamarck, 1818 (original description)
Molgula Forbes, 1848 (original description)
Molgula oculata Forbes, 1848 (original description)
Mya purpurea Montagu, 1808 accepted as Turtonia minuta (O. Fabricius, 1780) (source of synonymy)
Nucula radiata Hanley, 1849 accepted as Nucula hanleyi Winckworth, 1931 (original description)
Odostomia marionae MacGillivray, 1843 accepted as Onoba semicostata (Montagu, 1803) (source of synonymy)
Odostomia striolata Forbes & Hanley, 1850 (original description)
Oithona Alder & Hancock, 1851 accepted as Fiona Alder & Hancock, 1853 (original description)
Oithona nobilis Alder & Hancock, 1851 accepted as Fiona pinnata (Eschscholtz, 1831) (original description)
Perophora listeri Wiegman, 1835 (original description)
Pinna pectinata Linnaeus, 1767 sensu Pennant, 1812 accepted as Atrina fragilis (Pennant, 1777) (basis of record)
Polititapes virgineus (Linnaeus, 1767) sensu auct. accepted as Polititapes rhomboides (Pennant, 1777) (additional source)
Propilidium Forbes & Hanley, 1849 (original description)
Rissoa calathus Forbes & Hanley, 1850 accepted as Alvania beanii (Hanley, 1844) (original description)
Rissoa proxima Forbes & Hanley, 1850 accepted as Ceratia proxima (Forbes & Hanley, 1850) (original description)
Runcina Forbes, 1851 (original description)
Runcina hancocki Forbes, 1851 accepted as Runcina coronata (Quatrefages, 1844) (original description)
Skenea divisa Forbes & Hanley, 1853 accepted as Skenea serpuloides (Montagu, 1808) (original description)
Skenea laevis (R. A. Philippi, 1844) sensu Forbes & Hanley, 1856 accepted as Dikoleps nitens (R. A. Philippi, 1844) (basis of record)
Skenea nitidissima (J. Adams, 1800), sensu Forbes & Hanley, 1850 accepted as Omalogyra atomus (R. A. Philippi, 1841) (basis of record)
Skenea rota Forbes & Hanley, 1850 accepted as Ammonicera rota (Forbes & Hanley, 1850) (original description)
Spirialis jeffreysii Forbes & Hanley, 1849 accepted as Limacina retroversa (J. Fleming, 1823) (original description)
Spirialis macandrewi Forbes & Hanley, 1849 accepted as Limacina retroversa (J. Fleming, 1823) (original description)
Teredo megotara Hanley, 1848 accepted as Psiloteredo megotara (Hanley, 1848) (original description)
Thecacera virescens Forbes & Hanley, 1851 accepted as Palio nothus (G. Johnston, 1838) (original description)
Trochus lyonsii Leach, 1850 accepted as Calliostoma zizyphinum (Linnaeus, 1758) (original description)