Alvania arguta Locard & Caziot, 1900 accepted as Alvania lanciae (Calcara, 1845) (original description)
Aporrhais pespelecani var. incrassata Locard & Caziot, 1900 accepted as Aporrhais pespelecani (Linnaeus, 1758) (original description)
Bittium ragusianum Locard & Caziot, 1900 accepted as Bittium reticulatum (da Costa, 1778) (original description)
Cerithiopsis aciculata Locard & Caziot, 1900 accepted as Cerithiopsis tubercularis (Montagu, 1803) (original description)
Cerithium compositum Locard & Caziot, 1900 accepted as Cerithium vulgatum Bruguière, 1792 (original description)
Cerithium palustre Locard & Caziot, 1900 accepted as Cerithium lividulum Risso, 1826 (original description)
Cerithium palustre var. elongata Locard & Caziot, 1900 accepted as Cerithium lividulum Risso, 1826 (original description)
Cerithium payraudeaui Locard & Caziot, 1900 accepted as Cerithium renovatum Monterosato, 1884 (original description)
Cerithium requieni Locard & Caziot, 1900 accepted as Cerithium lividulum Risso, 1826 (original description)
Cerithium tortuosum Locard & Caziot, 1900 accepted as Cerithium alucastrum (Brocchi, 1814) (original description)
Cerithium triviale Locard & Caziot, 1900 accepted as Cerithium alucastrum (Brocchi, 1814) (original description)
Clathurella atropurpurea Locard & Caziot, 1900 accepted as Philbertia atropurpurea (Locard & Caziot, 1900) accepted as Raphitoma atropurpurea (Locard & Caziot, 1900) (original description)
Gadinia requieni Locard in Locard & Caziot, 1900 accepted as Trimusculus mammillaris (Linnaeus, 1758) (original description)
Gibberula recondita var. apicoflavicans Locard & Caziot, 1900 accepted as Gibberula recondita Monterosato, 1884 (original description)
Janthina payraudeaui Locard, 1901 accepted as Janthina globosa Swainson, 1822 (original description)
Mangilia difficilis Locard & Caziot, 1900 accepted as Mangelia difficilis (Locard & Caziot, 1900) (original description)
Marginella turgidula Locard & Caziot, 1900 accepted as Gibberula turgidula (Locard & Caziot, 1900) (original description)
Marginella turgidula var. minor Locard & Caziot, 1900 accepted as Gibberula turgidula (Locard & Caziot, 1900) (original description)
Nassa corrupta Locard & Caziot, 1900 accepted as Nassarius cuvierii (Payraudeau, 1826) accepted as Tritia cuvierii (Payraudeau, 1826) (original description)
Ocinebra blainvillei var. elongata Locard & Caziot, 1900 accepted as Muricopsis cristata (Brocchi, 1814) (original description)
Ocinebra blainvillei var. ventricosa Locard & Caziot, 1900 accepted as Muricopsis cristata (Brocchi, 1814) (original description)
Scalaria mediterranea Locard & Caziot, 1900 accepted as Epitonium clathrus (Linnaeus, 1758) (original description)
Scalaria mediterranea var. elongata Locard & Caziot, 1901 accepted as Epitonium clathrus (Linnaeus, 1758) (original description)
Scalaria mediterranea var. major Locard & Caziot, 1901 accepted as Epitonium clathrus (Linnaeus, 1758) (original description)
Scalaria mediterranea var. minor Locard & Caziot, 1901 accepted as Epitonium clathrus (Linnaeus, 1758) (original description)
Trivia globulosa Locard & Caziot, 1900 accepted as Trivia arctica (Pulteney, 1799) (original description)