FAMILY THRACIIDAE (MOLLUSCA, BIVALVIA) FROM CHINESE WATERS

Species, Thracia granubsa of the Family Thraciidae from the China Seas was first reported and described as new to science by Adams et Reeve (1850) . No other species was found there for more than 100 years until the author ( 1980) in his studies on Chinese bivalvia, discovered the second new species, Trigonothracia jinxinyae , described in this article .This paper deals with 6 species, three of which are new to science, collected from the littoral and sublittoral zones of the China Seas.Type specimens are deposited in the Institute of Oceanology, Academia Sinica, Oingdao .     

胶州湾对虾标志放流回捕率分析

根据在胶州湾东北部，红石崖和黄岛后湾标志放流虾的回捕情况的明显不同，联系到海域的环境特点和幼鲈鱼的分布及中国对虾的习性，讨论了制约放流虾回捕率差异的主要因素；提出了中国对虾放流点应选择在河口，混水，软底质海域。     

NEW GENUS AND SPECIES OF POLYPLACOPHORA (MOLLUSCA) FROM THE EAST CHINA SEA

The present paper dealing with two new species and one new genus of the Polyplacophora . is the first of a series of reports of systematic study on the deep sea mollusca collected by the research vessels JINXING and KEXUE I of the Academia Sinica , Institute of Oceanology , during 1978 and 1981 from the continental margin to the bathyal zone of the East China Sea .