The Bivalvia trawled by R/V"Jinxing "and"Science I” in the East China Sea from outer continental shelf to bathyal deep during June-July 1978 and August 1981 comprise 27 species.Among them 8 species namely Nuculana (Thesyleda) tanseimaruae, Malletia conspicua, Lucinoma yoshidai,Isoconcha sibogai, Cardita nodulosa, Lyonsia oahuensis, Cuspidaria approximate,and Cardiomya alcocki have never been reported in this area.