A son of Electryon and the Phrygian slave Mideia, and consequently a half-brother of Alcmene. (Paus. iii. 15. § 4.) He was married to Perimede, by whom he became the father of Oeonus, Argeius, and Melas. He was a friend of Heracles, whose son Tlepolemus slew him, according to some unintentionally, and according to others in a fit of anger. (Pind. Ol. vii. 50, &c.; Apollod. ii. 8. § 2, ii. 4. § 5, comp. Hom. Il. ii. 663.) His tomb was shown in aftertimes at Argos. (Paus. ii. 22. § 8; Plut. Pyrrh. 34.)