SCYL′LA. A beautiful nymph who excited the jealousy of Neptune’s
wife, Amphitrite, and was changed by the goddess into a frightful
sea-monster, which had six fearfully ugly heads and necks, and who,
rising unexpectedly from the deep, used to take off as many as six
sailors from a vessel, and carry them to the bottom of the sea. An
alternative danger with Charybdis.
“There on the right her dogs foul Scylla hides,
Charybdis roaring on the left presides.”