1. A daughter of Ares and Agraulos, the daughter of Cecrops. Halirrhothius, the son of Poseidon, intended to violate her, but was surprised by Ares, and killed, for which Poseidon bore a grudge against Ares. (Apollodorus iii.)
2. A maiden, who was dishonoured by her own brother, Astraeus, unwittingly. When Astraeus became aware of his deed, he threw himself into a river, which received from him the name of Astraeus, but was afterwards called Caicus.