Noteworthy Abyssal Mollusks (Excluding Vesicomyid Bivalves) Collected from the Nankai Trough off Shikoku by the ROV Kaiko of the Japan Marine Science & Technology Center

Abstract

Other than the vesicomyid bivalves that were already reported elsewhere, additional interesting bivalve and gastropod species were found among the molluscan samples collected from the Nankai Trough by the ROV Kaiko during April-May, 2001. These include two new gastropods Calliloncha nankaiensis n. sp. and Phymorhynchus turris n. sp. A protobranch bivalve, Nucinella viridis was re-discovered for the first time since the original description fom a locality some distance away from the type locality.