Aceras africana Locard, 1897 accepted as Cylichnium africanum (Locard, 1897) (original description)
Aceras fischeri Locard, 1897 accepted as Cylichnium africanum (Locard, 1897) (original description)
Actaeon azoricus Locard, 1897 accepted as Inopinodon azoricus (Locard, 1897) (original description)
Adeorbis umbilicatus Locard, 1898 accepted as Xyloskenea naticiformis (Jeffreys, 1883) (original description)
Anachis costulata var. elongata Locard, 1897 accepted as Amphissa acutecostata (R. A. Philippi, 1844) (original description)
Anachis haliaeeti var. attenuata Locard, 1897 accepted as Amphissa acutecostata (R. A. Philippi, 1844) (original description)
Anachis haliaeeti var. costulatissima Locard, 1897 accepted as Amphissa acutecostata (R. A. Philippi, 1844) (original description)
Anachis haliaeeti var. curta Locard, 1897 accepted as Amphissa acutecostata (R. A. Philippi, 1844) (original description)
Anachis haliaeeti var. major Locard, 1897 accepted as Amphissa acutecostata (R. A. Philippi, 1844) (original description)
Anomia ornata Locard, 1898 (original description)
Arca dakarensis Locard, 1898 accepted as Bathyarca inaequisculpta (E. A. Smith, 1885) (original description)
Arca talismani Locard, 1898 accepted as Anadara gibbosa (Reeve, 1844) (original description)
Assiminopsis Locard, 1897 accepted as Benthonella Dall, 1889 (original description)
Assiminopsis abyssorum Locard, 1897 accepted as Benthonella tenella (Jeffreys, 1869) (original description)
Axinus croulinensis var. transversa Locard, 1898 accepted as Thyasira obsoleta (A. E. Verrill & K. J. Bush, 1898) (original description)
Bela abyssorum Locard, 1897 accepted as Gymnobela abyssorum (Locard, 1897) (original description)
Bela confusa (Locard, 1897) accepted as Sorgenfreispira brachystoma (R. A. Philippi, 1844) (original description)
Bela detegata Locard, 1897 accepted as Propebela bergensis (Friele, 1886) (original description)
Bela furfuraculata Locard, 1897 accepted as Propebela bergensis (Friele, 1886) (original description)
Bela graphica Locard, 1897 accepted as Oenopota graphica (Locard, 1897) (original description)
Bela graphica var. ventricosa Locard, 1897 accepted as Oenopota graphica (Locard, 1897) (original description)
Bela holomera Locard, 1897 accepted as Gymnobela pyrrhogramma (Dautzenberg & H. Fischer, 1896) accepted as Austrobela pyrrhogramma (Dautzenberg & H. Fischer, 1896) (original description)
Bela minuscularia Locard, 1897 accepted as Curtitoma violacea (Mighels & C. B. Adams, 1842) (original description)
Bela polysarca var. major Locard, 1897 accepted as Gymnobela frielei (A. E. Verrill, 1885) (original description)
Bela polysarca var. minor Locard, 1897 accepted as Gymnobela frielei (A. E. Verrill, 1885) (original description)
Bela polysarca var. ventricosa Locard, 1897 accepted as Gymnobela frielei (A. E. Verrill, 1885) (original description)
Bela pygmaea var. attenuata Locard, 1897 accepted as Curtitoma ovalis (Friele, 1877) (original description)
Bela recondita Locard, 1897 accepted as Gymnobela pyrrhogramma (Dautzenberg & H. Fischer, 1896) accepted as Austrobela pyrrhogramma (Dautzenberg & H. Fischer, 1896) (original description)
Belomitra fischeri Locard, 1897 accepted as Belomitra quadruplex (R. B. Watson, 1882) (original description)
Belomitra lyrata Locard, 1897 accepted as Belomitra quadruplex (R. B. Watson, 1882) (original description)
Belomitra spelta Locard, 1897 accepted as Belomitra quadruplex (R. B. Watson, 1882) (original description)
Belomitra spelta var. major Locard, 1897 accepted as Belomitra quadruplex (R. B. Watson, 1882) (original description)
Belomitra spelta var. minor Locard, 1897 accepted as Belomitra quadruplex (R. B. Watson, 1882) (original description)
Bittium eburneum Locard, 1897 accepted as Abyssochrysos eburneus (Locard, 1897) (original description)
Bittium eburneum var. bicingulata Locard, 1897 accepted as Abyssochrysos eburneus (Locard, 1897) (original description)
Bulla guernei Dautzenberg, 1889 accepted as Roxania pinguicula (G. Seguenza, 1880) (additional source)
Bulla inesperata Locard, 1897 accepted as Scaphander punctostriatus (Mighels & C. B. Adams, 1842) (original description)
Bulla mabillei Locard, 1897 (original description)
Bulla millepunctata Locard, 1897 accepted as Scaphander nobilis A. E. Verrill, 1884 (original description)
Bulla semilaevis G. Seguenza, 1880 accepted as Roxania semilaevis (G. Seguenza, 1880) (additional source)
Bulla simplex Locard, 1897 accepted as Relichna simplex (Locard, 1897) (original description)
Cadulus amphoratus Locard, 1898 accepted as Cadulus amphora Jeffreys, 1883 (original description)
Cadulus artatus Locard, 1897 (redescription)
Cadulus monterosatoi Locard, 1897 (redescription)
Cadulus senegalensis Locard, 1897 accepted as Gadila senegalensis (Locard, 1897) (redescription)
Cadulus strangulatus Locard, 1897 accepted as Gadila strangulata (Locard, 1897) (redescription)
Capulus simplex Locard, 1898 (original description)
Cerithiopsis amblytera var. attenuata Locard, 1897 accepted as Cerithiella amblytera (R. B. Watson, 1880) (original description)
Cerithiopsis excavata Locard, 1897 accepted as Metaxia metaxa (Delle Chiaje, 1828) (original description)
Chiton coronatus Locard, 1898 accepted as Placiphorella atlantica (A. E. Verrill & S. Smith, 1882) (original description)
Clathurella rugosissima Locard, 1897 accepted as Latirus rugosissimus (Locard, 1897) (original description)
Clathurella salarium P. Fischer, 1897 (original description)
Clionella conspicienda Locard, 1897 accepted as Belomitra quadruplex (R. B. Watson, 1882) (original description)
Clionella delicatulina Locard, 1897 accepted as Belomitra quadruplex (R. B. Watson, 1882) (original description)
Clionella delicatulina var. costulata Locard, 1897 accepted as Belomitra quadruplex (R. B. Watson, 1882) (original description)
Clionella quadruplex (R. B. Watson, 1882) accepted as Belomitra quadruplex (R. B. Watson, 1882) (basis of record)
Clionella quadruplex var. minor Locard, 1897 accepted as Belomitra quadruplex (R. B. Watson, 1882) (original description)
Columbella nitidulina Locard, 1897 accepted as Mitrella nitidulina (Locard, 1897) (original description)
Columbella sagra var. atlantica Locard, 1897 accepted as Colombella sagra A. d'Orbigny, 1853 accepted as Falsuszafrona idalina (Duclos, 1840) (original description)
Corbula curta Locard, 1886 accepted as Varicorbula gibba (Olivi, 1792) (additional source)
Crepidula gryphaea Locard, 1898 (original description)
Crepidula gryphaea var. undulata Locard, 1898 accepted as Crepidula gryphaea Locard, 1898 (original description)
Cuspidaria brevirostris (T. Brown, 1829) accepted as Cuspidaria cuspidata (Olivi, 1792) (basis of record)
Cuspidaria depressa (Jeffreys, 1882) accepted as Halonympha depressa (Jeffreys, 1882) (basis of record)
Cuspidaria filocarinata (E. A. Smith, 1885) accepted as Rhinoclama notabilis (Jeffreys, 1876) (basis of record)
Cuspidaria imbricata Locard, 1898 accepted as Cuspidaria circinata (Jeffreys, 1876) (original description)
Cuspidaria lucifuga P. Fischer, 1886 accepted as Cuspidaria undata (A. E. Verrill, 1884) (redescription)
Cuspidaria nitens Locard, 1898 accepted as Rhinoclama nitens (Locard, 1898) (original description)
Cuspidaria semirostrata Locard, 1898 (original description)
Cuspidaria striolata Locard, 1897 accepted as Cardiomya striolata (Locard, 1897) (additional source)
Dentalium caudani var. intermedia Locard, 1898 accepted as Fissidentalium candidum (Jeffreys, 1877) (original description)
Dentalium caudani var. parfaiti Locard, 1898 accepted as Fissidentalium candidum (Jeffreys, 1877) (original description)
Dentalium exuberans Locard, 1897 accepted as Fissidentalium paucicostatum (R. B. Watson, 1879) (redescription)
Dentalium milneedwardsi Locard, 1897 accepted as Fissidentalium capillosum (Jeffreys, 1877) (redescription)
Dentalium scamnatum Locard, 1897 accepted as Fissidentalium capillosum (Jeffreys, 1877) (redescription)
Dentalium scamnatum var. subrecta Locard, 1898 accepted as Fissidentalium capillosum (Jeffreys, 1877) (original description)
Dentalium semivestitum Locard, 1897 accepted as Fissidentalium semivestitum (Locard, 1897) (redescription)
Diplodonta labelliformis Locard, 1898 accepted as Diplodonta brocchii (Deshayes, 1850) (original description)
Diplodonta orbiculata Locard, 1898 accepted as Diplodonta brocchii (Deshayes, 1850) (original description)
Emarginula elata Locard, 1898 accepted as Emarginula christiaensi Piani, 1985 (original description)
Emarginula intervecta Locard, 1898 accepted as Emarginula fissura (Linnaeus, 1758) (original description)
Eulima apicofusca Locard, 1897 accepted as Batheulima fuscoapicata (Jeffreys, 1884) (original description)
Eulima parfaiti de Folin, 1884 accepted as Curveulima devians (Monterosato, 1884) (source of synonymy)
Eulimella nana Locard, 1897 (original description)
Euthria saharica Locard, 1897 accepted as Euthriostoma saharicum (Locard, 1897) (original description)
Fissurella saharica Locard, 1897 accepted as Diodora dorsata (Monterosato, 1878) (original description)
Fissurella tarnieri [sic] accepted as Fissurella tanneri A. E. Verrill, 1882 accepted as Diodora tanneri (A. E. Verrill, 1882) (basis of record)
Fusus bocagei var. ecaudata Locard, 1897 accepted as Fusinus bocagei (P. Fischer, 1882) accepted as Pseudofusus bocagei (P. Fischer, 1882) (original description)
Fusus bocagei var. longicaduata Locard, 1897 accepted as Fusinus bocagei (P. Fischer, 1882) accepted as Pseudofusus bocagei (P. Fischer, 1882) (original description)
Fusus bocagei var. major Locard, 1897 accepted as Fusinus bocagei (P. Fischer, 1882) accepted as Pseudofusus bocagei (P. Fischer, 1882) (original description)
Fusus bocagei var. minor Locard, 1897 accepted as Fusinus bocagei (P. Fischer, 1882) accepted as Pseudofusus bocagei (P. Fischer, 1882) (original description)
Fusus grimaldii var. major Locard, 1897 accepted as Amiantofusus amiantus (Dall, 1889) (original description)
Fusus sectus Locard, 1897 accepted as Fusinus sectus (Locard, 1897) (original description)
Gadila strangulata (Locard, 1897) (additional source)
Gibberula abyssicola Locard, 1897 (original description)
Gibberula monterosatoi Locard, 1897 accepted as Gibberula abyssicola Locard, 1897 (original description)
Gibberula retusa Locard, 1897 accepted as Gibberula abyssicola Locard, 1897 (original description)
Gibbula corallioides Locard, 1898 (original description)
Gibbula gorgonarum P. Fischer, 1884 accepted as Callumbonella suturalis (R. A. Philippi, 1836) (redescription)
Gibbula hannonis Locard, 1898 accepted as Margarites luciae (G. Seguenza, 1876) (original description)

Azores Exclusive Economic Zone for Patella nidulina Locard, 1898  (inaccurate)
Cape Verdean Exclusive Economic Zone for Columbella sagra var. atlantica Locard, 1897 
Moroccan part of the North Atlantic Ocean for Columbella nitidulina Locard, 1897 
Western Saharan part of the North Atlantic Ocean for Columbella nitidulina Locard, 1897