sentences:  Dionysus punished them by changing them into bats, and their work into vines.Plutarch, Aelian, and Antoninus Liberalis, though with some differences in the detail, relate that Dionysus appeared to the sisters in the form of a maiden, and invited them to partake in the Dionysian Mysteries.When the sisters declined the invitation, the god metamorphosed himself successively into a bull, a lion, and a panther, and the sisters were driven mad.