The material for this study was collected by the Institute of Oceanology, Acadimia Sinica in the past few years. One hundred and fifty nine bottom sediment samples were examined. A total number of 173 species belonging to 101 genera and 36 families 2 order were identified; of these, 16 species are new and 106 species are first recorded for this region. (Type specimens are deposited in the.Institute of Oceanology, Academia Sinica). The descriptions of new species are given below: