“ Scylla appears as a beautiful maiden beloved by the sea-god Glaucus and other deities, and changed by the jealous Circe (or other rival) into a sea-monster; afterwards she was transformed into a rock shunned by fishermen. According to a late legend (Servius on Aeneid, iii. 420) , Charybdis was a voracious woman who robbed Heracles of his cattle and was therefore cast into the sea by Zeus, where she retained her old voracious nature. In later poetry and art Scylla was conceived of as a maiden above, with dogs' or wolves' heads growing out of her body, and the tail of a fish. ”