Hippolytus

“ The girl, however, replies that she had seen (the animal) , but that she would not show him unless Hercules previously would come along with her for the purpose of sexual intercourse. Now Herodotus informs us that her upper parts as far as the groin were those of a virgin, but that everything below the body after the groin presented some horrible appearance of a snake. In anxiety, however, for the discovery of his horse, Hercules complies with the monster’s request ”