Themisto

For the moon of Jupiter, see Themisto (moon).For the Planktonic crustacean Amphipod genus, see Themisto gaudichaudii.In Greek mythology, Themisto was the third and last wife of Athamas. She had five children by him (Apollodorus, I, 9, 2): Leucon, Erythrius, Schoeneus, Ptous, and Porphyrion. In other sources there were but two: Sphincius and Orchomenus.When Athamus returned to his second wife, Ino, Themisto dressed all her own children in white clothing, and Ino's in black. Themisto then proceeded to kill all the black-clothed children, as an act of revenge against Athamus.
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[Greek heroic] The daughter of Hypseus, second wife of Athamas. When the latter returned to his first wife Ino, Themisto tried to kill Ino's children. To recognize them at night she dressed Ino's children in black clothes and dressed her own in white. Ino, however, switched the clothes so Themisto killed her own children in stead.