Acmaea catalaunensis Cossmann, 1913 † (original description)
Allixia Cossmann, 1913 † accepted as Pelycidion P. Fischer, 1873 (original description)
Capulus larochei Cossmann, 1913 † (original description)
Carychium cylindroides Staadt, 1913 † (redescription)
Carychium nincki Cossmann, 1913 † (redescription)
Carychium sparnacense var. polysarcum Cossmann, 1913 † accepted as Ovicarychium polysarcum (Cossmann, 1913) † (original description)
Corbula moloti Cossmann, 1913 † (original description)
Cylindrellina sparnacensis Cossmann, 1913 † accepted as Paradistoechia sparnacensis (Cossmann, 1913) † (original description)
Discors mirabilis Staadt, 1913 † accepted as Discors mirabile Staadt, 1913 † (original description)
Fissurella fenauxi Cossmann, 1913 † accepted as Diodora fenauxi (Cossmann, 1913) † (original description)
Glandina hypermeces Staadt, 1913 † accepted as Pseudoleacina hypermeces (Staadt, 1913) † (redescription)
Helix semiinversa Cossmann, 1913 † (original description)
Hydrobia (Parhydrobia) Cossmann & Dollfus, 1913 † accepted as Parhydrobia Cossmann & Dollfus, 1913 † (original description)
Lacuna microscopica Staadt, 1913 † accepted as Medoriopsis microscopica (Staadt, 1913) † (original description)
Megalomastoma bonneti Cossmann, 1913 † accepted as Ischurostoma bonneti (Cossmann, 1913) † (original description)
Melania (Melanoides) inquinata var. bicoronata Staadt, 1913 † accepted as Tinnyea vittata bicoronata (Staadt, 1913) † (original description)
Melania (Melanoides) inquinata var. pourcyensis Staadt, 1913 † accepted as Brotia (Tinnyea) melanioides vittata (Lamarck, 1804) † accepted as Tinnyea vittata (Lamarck, 1804) † (original description)
Microstagon deshayesi Cossmann, 1913 † (original description)
Miocardia laciniosa Staadt, 1913 † accepted as Miocardiopsis laciniosa (Staadt, 1913) † (original description)
Mitra restifera Staadt, 1913 † accepted as Pseudocancilla restifera (Staadt, 1913) † (original description)
Physa (Aplecta) brevispirata Cossmann & Pissarro, 1913 † accepted as Aplexa cotiensis Pacaud, 2022 † (redescription)
Pseudotaphrus vitiusculensis (Pezant, 1910) † accepted as Rissoina vitiusculensis Pezant, 1910 † (new combination reference)
Rillya convoluta Staadt, 1913 † (redescription)
Roxania pezanti Cossmann, 1913 † (original description)
Suessionia altera Cossmann, 1913 † accepted as Eocantharus alter (Cossmann, 1913) † (original description)
Triphora pezanti Cossmann, 1913 † (original description)
Turricula plateaui Staadt, 1913 † accepted as Fusimitra plateaui (Staadt, 1913) † (original description)
Uxia gailleti Cossmann, 1913 † accepted as Unitas gailleti (Cossmann, 1913) † (original description)