Four Protobranch Bivalves Collected by the ROV Kaiko from Hadal Depths in the Japan Trench

Abstract

Four protobranchiate bivalves were collected by the ROV Kaiko from hadal depths in the Japan Trench in July 2002. They are Katadesmia vincula, Neilonella profunda n. sp., Ledellina convexirostra and Yoldiella kaikonis n. sp.