The following species were found in grab samples from the Bay of Nha Trang: Aglaophamus dicirroides n. sp., A. orientalis n. sp., A. sinensis (Fauvel, 1932b), A. tepens n. sp., A. vietnamensis n. sp., Inermonephtys gallardi n. gen. and n. sp., I. inermis (Ehlers, 1887) new combination, Micronephthys sphaerocirrata (Wesenberg-Lund, 1949), Nephtys oligobranchia Southern, 1921 and N. polybranchia Southern, 1921. The generic and specific characters used in the family are discussed.