(Ἐρατίδαι), an ancient illustrious family in the island of Rhodes. The Eratidae of Ialysus in Rhodes are described by Pindar (Pind. O. 7.20, &c.; comp. Böckh, Explicat. p. 165) as descended from Tlepolemus and the Heracieidae, of whom a colony seems to have gone from Argos to Rhodes. Damagetus and his son Diagoras belonged to the family of the Eratidae. [DAMAGETUS, DIAGORAS.]