Acicula pseudocylichna De Stefani, 1880 † (original description)
Ancylus parmophorus De Stefani, 1880 † (original description)
Bythinia verrii De Stefani, 1880 † accepted as Bithynia verrii De Stefani, 1880 † (original description)
Carychium conforme De Stefani, 1880 † (original description)
Carychium rufolabiatum De Stefani, 1880 † (original description)
Cyclostoma praecurrens De Stefani, 1880 † accepted as Pomatias praecurrens (De Stefani, 1880) † (original description)
Dreissena semen De Stefani, 1880 † accepted as Dreissena dubia (Mayer, 1871) † (original description)
Ervilia nardii (De Stefani, 1877) † (basis of record)
Glandina senensis De Stefani, 1880 † accepted as Poiretia senensis (De Stefani, 1880) † (original description)
Helix (Macularia) majoris De Stefani, 1880 † accepted as Marmorana majoris (De Stefani, 1880) † (original description)
Helix (Tachea) placentina De Stefani, 1880 † accepted as Cepaea placentina (De Stefani, 1880) † (original description)
Helix (Vallonia) subpulchella var. oenotria De Stefani, 1880 † accepted as Vallonia pulchella (O. F. Müller, 1774) (original description)
Helix fuchsi De Stefani, 1880 † accepted as Canariella theodori (De Stefani, 1880) † (original description)
Helix theodori De Stefani, 1880 † accepted as Canariella theodori (De Stefani, 1880) † (original description)
Hyalinia olivetorum (Gmelin, 1791) accepted as Retinella olivetorum (Gmelin, 1791) (basis of record)
Hyalinia olivetorum var. perusina De Stefani, 1880 † accepted as Retinella olivetorum perusina (De Stefani, 1880) † (original description)
Libania peculiaris De Stefani, 1880 † (original description)
Limax castrensis De Stefani, 1880 † (original description)
Melania etrusca De Stefani, 1880 † accepted as Melanoides curvicosta (Deshayes, 1835) † (original description)
Melanopsis flammulata var. tuberosa De Stefani, 1880 † accepted as Melanopsis nodosa A. Férussac, 1822 † (original description)
Nematurella meneghiniana var. etrusca De Stefani, 1880 † accepted as Prososthenia etrusca (De Stefani, 1880) † (original description)
Neritina etrusca De Stefani, 1880 † accepted as Theodoxus (Neritaea) groyanus (A. Férussac, 1823) † represented as Theodoxus groyanus (A. Férussac, 1823) † (original description)
Planorbis loxostoma De Stefani, 1880 † accepted as Gyraulus albus (O. F. Müller, 1774) (original description)
Planorbis peruzzii De Stefani, 1880 † accepted as Gyraulus peruzzii (De Stefani, 1880) † (original description)
Prososthenia interamnae De Stefani, 1880 † accepted as Micromelania zitteli (Schwartz von Mohrenstern, 1864) † (original description)
Sansania bourguignati De Stefani, 1880 † (original description)
Unio pillae De Stefani, 1880 † (original description)
Valvata interposita De Stefani, 1880 † (original description)
Vertigo brusinai De Stefani, 1880 † (original description)
Vertigo diversidens var. bosniackii De Stefani, 1880 † (original description)
Vivipara belluccii De Stefani, 1880 † accepted as Viviparus belluccii De Stefani, 1880 † (original description)