This is from a public domain translation of the Greek historian Herodotus, by George Rawlinson. In it, Herodotus describes one of the legends about the origin of the Scythians. This section deals with Hercules and his relationship with a serpentine monster who is similar to some portrayals of Echidna. Hercules had three sons with this Scythian female.8. Thus say the Scythians about themselves and about the region above them; but the Hellenes who dwell about the Pontus say as follows: -- Heracles driving the cattle of Geryones came to this land, then desert, which the Scythians now inhabit; and Geryones, says the tale, dwelt away from the region of the Pontus, living in the island called by the Hellenes Erytheia, near Gadeira which is outside the Pillars of Heracles by the Ocean. -- As to the Ocean, they say indeed that it flows round the whole earth beginning from the place of the sunrising, but they do not prove this by facts. -- From thence Heracles came to the land now called Scythia; and as a storm came upon him together with icy cold, he drew over him his lion's skin and went to sleep. Meanwhile the mares harnessed in his chariot disappeared by a miraculous chance, as they were feeding. 9. Then when Heracles woke he sought for them; and having gone over the whole land, at last he came to the region which is called Hylaia; and there he found in a cave a kind of twofold creature formed by the union of a maiden and a serpent, whose upper parts from the buttocks upwards were those of a woman, but her lower parts were those of a snake. Having seen her and marvelled at her, he asked her then whether she had seen any mares straying anywhere; and she said that she had them herself and would not give them up until he lay with her; and Heracles lay with her on condition of receiving them. She then tried to put off the giving back of the mares, desiring to have Heracles with her as long as possible, while he on the other hand desired to get the mares and depart; and at last she gave them back and said: "These mares when they came hither I saved for thee, and thou didst give me reward for saving them; for I have by thee three sons. Tell me then, what must I do with these when they shall be grown to manhood, whether I shall settle them here, for over this land I have power alone, or send them away to thee?" She thus asked of him, and he, they say, replied: "When thou seest that the boys are grown to men, do this and thou shalt not fail of doing right: -- whichsoever of them thou seest able to stretch this bow as I do now, and to be girded [12a] with this girdle, him cause to be the settler of this land; but whosoever of them fails in the deeds which I enjoin, send him forth out of the land: and if thou shalt do thus, thou wilt both have delight thyself and perform that which has been enjoined to thee." 10. Upon this he drew one of his bows (for up to that time Heracles, they say, was wont to carry two) and showed her the girdle, and then he delivered to her both the bow and the girdle, which had at the end of its clasp a golden cup; and having given them he departed. She then, when her sons had been born and had grown to be men, gave them names first, calling one of them Agathyrsos and the next Gelonos and the youngest Skythes; then bearing in mind the charge given to her, she did that which was enjoined. And two of her sons, Agathyrsos and Gelonos, not having proved themselves able to attain to the task set before them, departed from the land, being cast out by her who bore them; but Skythes the youngest of them performed the task and remained in the land: and from Skythes the son of Heracles were descended, they say, the succeeding kings of the Scythians (Skythians): and they say moreover that it is by reason of the cup that the Scythians still even to this day wear cups attached to their girdles: and this alone his mother contrived for Skythes.  Such is the story told by the Hellenes who dwell about the Pontus.