Abstract
Previously, the third to fifth zoeal stage and one megalopa stage of Tritodynamia horvathi NOBILI found in the plankton had been reported by the junior author (1983) . Recently, the present authors collected the berried female crabs of this species from the Yatsushiro-Kai, Kumamoto Prefecture. These crabs were reared in the laboratory for observation of the larval development. In the present paper, the larvae of the first and second zoeal stages of this species are described and illustrated, and also compared with these zoeal stages of a relative species, T. japonica ORTMANN reported by TERADA (1987).
