Abstract / Introduction / Summary:
Two pyramidellid mollusk species were recorded, Tiberia pusilla (A. Adams, 1854) from off Cape Ashizuri, Kochi prefecure in a depth of 78 m and T. nitidula (A. Adams, 1860) from Amami ilands, Kagoshima prefecture. The two differ from each other by the suture form, deeper and conspicuous in the former.
