Note 513 — Chapter V · THE DEMONOLOGY OF GHOSTS AND SPRITES AND BOGEYS.
Reading edition
Met. V. 552
vobis Acheloïdes unde pluma pedesque avium cum virginis ora geratis?
Apollonius Rhodius also believes that the bird form was a metamorphosis. Argon. IV. 898
τότε δ’ ἄλλο μὲν οἰωνοῖσιν ἄλλο δὲ παρθενικῇς ἐναλίγκιαι ἔσκον ἰδέσθαι.