The fifty daughters of Danaus. He fled with his daughters in fear of his twin brother Aegyptus, but the fifty sons of Aegyptos followed them to Argos and forced Danaus to give them his daughters in marriage. At their father's behest they murdered their husbands at their wedding night. The only one who spared her husband was Hypermnestra. In Hades, the girls were condemned eternally to pour water in a vessel with holes in its bottom.