In the mean time Minos besieges Megara. Scylla, becoming enamoured of him, betrays her country, the safety of which depends upon the purple lock of her father Nisu. Being afterwards rejected by Minos, she clings to his ship, and is changed into a bird, while her father becomes a sea eagle. Minos returns to Crete, and having erected the Labyrinth with the assistance of Dæd...