a tyrant of Heraclea in Pontus, who was killed by Chion and Leonidas, Plato's pupils, during the celebration of the festivals of Bacchus. He had enjoyed the sovereign power during 12 years. A Lacedemonian sent to quiet the Byzantines. He was recalled, but refused to obey, and fled to Cyrus the Younger, who made him captain of 13,000 Greek soldiers. He obtained a victory over Artaxerxes; who was so enraged at the defeat, that when Clearchus fell into his hands by the treachery of Tissaphernes, he put him immediately to death.