Histories

Heracles came from there to the country now called Scythia (region (general)), AsiaScythia, where, encountering wintry and frosty weather, he drew his lion's skin over him and fell asleep, and while he slept his mares, which were grazing yoked to the chariot, were spirited away by divine fortune.

When Heracles awoke, he searched for them, visiting every part of the country, until at last he came to the land called the Woodland, and there he found in a cave a creature of double form that was half maiden and half serpent; above the buttocks she was a woman, below them a snake.

When he saw her he was astonished, and asked her if she had seen his mares straying; she said that she had them, and would not return them to him before he had intercourse with her; Heracles did, in hope of this reward.