The systematic positions of four buccinid species collected from off Tajima in the Japan Sea are corrected by the radular feature as follows : Buccinum acutispiratum Dall to Reticubuccinum acutispiratum (Dall) ; Volutopsius hirasei Pilsbry to Habevolutopsius hirasei (Pilsbry) ; Volutopsius middendorffi emphaticus Dall to Lussivolutopsius emphaticus (Dall) ; Volutopsius furukawai Oyama to Lussivolutopsius furukawai (Oyama).