"Who weeps for Scylla in her cave of bones"

In Greek mythology, Scylla was a nymph of such great beauty that the sea-god Glaucus fell in love with her. When she didn't return his love he went to the sorceress Circe to ask her for a love potion. But Circe fell in love with Glaucus, who refused her, and in her anger she poisoned the waters where Scylla bathed. The poison transformed Scylla into a monster with multiple heads and feet, and vicious canine heads sprouting from her waist. Now, in her anger and grief, Scylla destroys all that come near her.