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"The Lapith Caeneus was originally a young woman named Caenis and the favorite of Poseidon, who changed her into a man at her request, and made Caeneus into an invulnerable warrior. Such warrior women, indistinguishable from men, were familiar among the Scythian horsemen too. In the battle with the centaurs Caeneus proved invulnerable, until the Centaurs crushed him with rocks and trunks of trees. He disappeared into the depths of the earth unharmed and was released as a sandy-headed bird."