Author's Organization：Department of Earth Sciences, College of Education, University of the Ryukyus Department of Earth Sciences, College of Education, University of the Ryukyus
Three new localities of paleocopid ostracode genus Manawa are reported from Okinawa-jima. Examination of many individuals of Manawa konishii indicates that the species is sexually dimorphic. The orientation of the genus Manawa is discussed.
