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A new species of the genus Calliaxina Ngoc-Ho, 2003, C. xishaensis sp. n., collected from the South China Sea is described and illustrated. It is distinguishable from C. thomassini Ngoc-Ho, 2014 by having the rostrum broadly triangular with pointed tip and is distinguishable from C. novaebritanniae (Borradaile, 1900) and C. punica (de Saint Laurent & Manning, 1982) by the posterior margin of telson being convex. It is also the first record of this genus from the China seas. A key to the species of Calliaxina is given. [ABSTRACT FROM AUTHOR]

Two new species of the genus Acutigebia (Decapoda: Gebiidae: Upogebiidae) collected from Xisha (Spratly) Islands are described. Acutigebia serrifera, new species, most closely resembles Acutigebia simsoni (Thomson, 1893), but differs markedly in the propodus of pereopod 1 with lower teeth. Acutigebia laticauda, new species, most closely resembles Acutigebia trypeta (Sakai, 1970), but differs markedly in the proportionally wider telson. This is the fi rst record of the genus Acutigebia from the South China Sea. An updated key to the species of Acutigebia is provided. [ABSTRACT FROM AUTHOR]

A new species, Axianassa sinica, from the Beibu Gulf (Gulf of Tonkin), northern South China Sea, is described and illustrated. The new species is readily distinguished from A. australis Rodrigues & Shimizu, 1992, by its acute rostrum, merus of pereopod 1 with a tooth distally on lower margin and an elongated telson. [ABSTRACT FROM AUTHOR]