シノニム Bulla bizona A. Adams, 1850 Bulla girardi Audouin, 1826 Cylichna bizona (A. Adams, 1850) Cylichna girardi (Audouin, 1826) Cylichnina girardi (Audouin, 1826) Mnestia bizona (A. Adams, 1850) Retusa (Ventomnestia) bizona A. Adams, 1850 Retusa girardi (Audouin, 1826) Ventomnestia bizona (A. Adams, 1850) Ventomnestia girardi (Audouin, 1826) Ventomnestia kawamurai Habe, 1950