Cerithiopsis shikoensis Yokoyama, 1928 accepted as Trochocerithium shikoense (Yokoyama, 1928) (original description)
Loripes goliath Yokoyama, 1928 † accepted as Meganodontia goliath (Yokoyama, 1928) † (original description)
Melania grossula Yokoyama, 1928 † accepted as Melanoides grossula (Yokoyama, 1928) † (original description)
Melania saigoi Yokoyama, 1928 † accepted as Melanoides saigoi (Yokoyama, 1928) † (original description)
Melania scabroides Yokoyama, 1928 † accepted as Mieniplotia scabra (O. F. Müller, 1774) (original description)
Melania submadiunensis Yokoyama, 1928 † accepted as Melanoides obliquegranosus (E. A. Smith, 1878) accepted as Tarebia granifera (Lamarck, 1816) (original description)