Ancylus subcostatus Benoist, 1874 † (original description)
Astralium aquitanicum Benoist, 1874 † (original description)
Borsonia burdigalina Benoist, 1874 † (original description)
Caecum banoni Benoist, 1874 † (original description)
Caecum miocenicum Benoist, 1874 † (original description)
Caecum saucatsense Benoist, 1874 † (original description)
Cleodora moulinsii Benoist, 1874 † accepted as Johnjagtia moulinsii (Benoist, 1874) † (original description)
Euthria basteroti Benoist, 1874 † (original description)
Helix saucatsensis Benoist, 1874 † accepted as Discus saucatsensis (Benoist, 1874) † (original description)
Jania crassicosta Benoist, 1874 † accepted as Muricopsis crassicosta (Benoist, 1874) † (original description)
Modulus basteroti Benoist, 1874 † (original description)
Paludina aquitanica Benoist, 1874 † accepted as Viviparus aquitanicus (Benoist, 1874) † (original description)
Patella clypeatula Benoist, 1874 † (original description)
Phasianella millepunctata Benoist, 1874 † (original description)
Physa subacuta Benoist, 1874 † (original description)
Teinostoma simplex Benoist, 1874 † (original description)
Teredo saucatsensis Benoist, 1873 † (original description)
Trochus saucatsensis Benoist, 1874 † (original description)