Larvae of the xanthid crab (Crustacea, Brachyura) found in the Southern Ocean

The survey of the brachyuran larvae occurring in the surface plankton was made during the KH-83-4 cruise (BIOMASS SIBEX I) of the R. V. HAKUHO MARU of the Ocean Research Institute, University of Tokyo, in the Southern Ocean south of Australia from 22 November 1983 to 24 February 1984. The larvae were taken only at Stn. 1 in the Southern Ocean, and not obtained in other areas. The samples were classified into two larval stages, zoea and megalopa. It seems likely that the specimens of two kinds are composed of the fourth stage zoea and megalopa of the family Xanthidae and of the same species. These larvae are described and illustrated