This story probably needs trigger warnings. Here, the legend of the Lamia is explained by the Paradoxographer Heraclitus (not the same figure as the philosopher). Antiquity has bequeathed to us a collection of works on ‘wonders’: some are mere lists of amazing things; others are rationalizing explanations of myths (for which the Hellenistic Palaephaetus is most famous). This summer I am going to post material from the paradoxographers periodically since there is very little of it translated and free online.
From Heraclitus the Paradoxographer 34: On Lamia
“They tell the story that after Zeus had sex with [Lamia], Hera turned her into a beast and further, when she went crazy, she ripped out her eyes and threw them into a cup and, in addition, that she ate flesh and dined on human beings.
It really could have gone this way: Zeus, who was a king, got intimate with her because she was pretty. Then Hera abducted her, gauged out her eyes, and left her on a mountain. For this reason she was living a painful life and had no help at all. Because she was living unwashed and unhealed in desolate places, she seemed to be a beast.”
῾Ιστοροῦσιν ὅτι, Διὸς αὐτῇ συμμιγέντος, ῞Ηρα ἀπεθηρίωσεν αὐτήν, καὶ ὅτι ἡνίκα ἂν μανῇ, τοὺς ὀφθαλμοὺς ἐξαιρεῖ καὶ εἰς κοτύλην βάλλει, καὶ ὅτι σαρκοφαγεῖ καὶ ἀνθρώπους ἐσθίει. εἴη δ’ ἂν τάδε. καλῇ αὐτῇ οὔσῃ ὁ Ζεὺς ἐπλησίασε βασιλεύων, ῞Ηρα δὲ συναρπάζουσα αὐτήν, τοὺς ὀφθαλμοὺς ἐξώρυξε καὶ εἰς τὰ ὄρη ἔρριψεν· ὅθεν ἐπιπόνως ἔζη ἐπικουρουμένη δὲ οὐδέν· <διὰ δὲ τὸ> ὑπὸ ταῖς ἐρημίαις καταγινομένην αὐτὴν ἄλουτον καὶ ἀθεράπευτον εἶναι, ἐδόκει θηρίον ὑπάρχειν.
Here is another account:
Duris, BNJ 76 F17 [= Photios s.v. Lamia]
“In the second book of his Libyan History, Duris reports that Lamia was a fine looking woman but after Zeus had sex with her, Hera killed the children she bore because she was envious. As a result she was disfigured by grief and would seize and kill the children of others.”
ταύτην ἐν τῆι Λιβύηι Δοῦρις ἐν δευτέρωι Λιβυκῶν ἱστορεῖ γυναῖκα καλὴν γενέσθαι, μιχθέντος δ᾽ αὐτῆι Διὸς ὑφ᾽ ῞Ηρας ζηλοτυπουμένην ἃ ἔτικτεν ἀπολλύναι· διόπερ ἀπὸ τῆς λύπης δύσμορφον γεγονέναι καὶ τὰ τῶν ἄλλων παιδία ἀναρπάζουσαν διαφθείρειν.