Acanthis (Ἀκανθίς) or Acanthyllis (Ἀκανθυλλίς) was the daughter of Hippodamia and Autonous and sister to Anthus, Erodius, Schoenous and Acanthus. When their father's horses attacked Anthus out of hunger and ate him, Zeus and Apollo, out of pity for the grieving family, transformed them into birds. Acanthis thus became a thistle finch.