Abstract
Post-embryonic development and seasonal distribution of developmental stages of marine Ostracoda (Podocopina and Myodocopina) are briefly reviewed. Since studies on the former are one of the first steps required for the bio-ecological investigations, information for precise identification of developmental stages is described. On Myodocopina, total number of larval stages and a key to early instars are presented. According to Theisen (1966), life histories (seasonal distribution of developmental stages) of some species are summerized in tabular form.