Ancylidae
Laevapex diaphanus (Haldeman, 1841)
Laevapex fuscus (C. B. Adams, 1841)
Laevapex japonica T. Habe & Burch, 1965
Laevapex nipponica (Kuroda, 1947)
Laevapex peninsulae (Pilsbry, 1903)
