(Ἀρηΐθοος), king of Arne in Boeotia, and husband of Philomedusa, is called in the (7.8, &c.) κορυνήτης, because he fought with no other weapon but a club. He fell by the hand of the Arcadian Lycurgus, who drove him into a narrow defile, where he could not make use of his club. Erythalion, the friend of Lycurgus, wore the armour of Areithous in the Trojan war. (Hom. Il. 7.138, &c.) The tomb of Areithous was shewn in Arcadia as late as the time of Pausanias. (8.11.3.) There is another mythical personage of this name in the (20.487).