Phlegon of Tralles, On Marvels 4
“Hesiod—along with Dikaiarkhos, Klearkhos, Kallimakhos and some others—relates these things about Teiresias. When Teiresias the son of Euêros in Arcadia was a young man he saw snakes copulating, he wounded one and immediately changed his form. He changed into a woman from a man and then had sex with a man.
But after Apollo prophesied to him that, if he saw snakes copulating again and wounded one in the same way, he would be as he was before, Teiresias took care to do the things which were prophesied by the god and thus regained his older form.
When Zeus was fighting with Hera and saying that in sex a wife surpassed her husband in the pleasures of intercourse—even while Hera was claiming the opposite—it seemed right to them to send for Teiresias because he had tried out both ways. When they questioned him, he responded that if there were ten portions, a man took pleasure in one and a woman took pleasure in ten.
In her rage over this, Hera took out his eyes and made him blind. But Zeus gave him the gift of prophecy and to live for seven generations.”
῾Ιστορεῖ δὲ ῾Ησίοδος καὶ Δικαίαρχος καὶ Κλέαρχος καὶ Καλλίμαχος καὶ ἄλλοι τινὲς περὶ Τειρεσίου τάδε. Τειρεσίαν τὸν Εὐήρους ἐν ᾿Αρκαδίᾳ [ἄνδρα ὄντα] ἐν τῷ ὄρει τῷ ἐν Κυλλήνῃ ὄφεις ἰδόντα ὀχεύοντας τρῶσαι τὸν ἕτερον καὶ παραχρῆμα μεταβαλεῖν τὴν ἰδέαν· γενέσθαι γὰρ ἐξ ἀνδρὸς γυναῖκα καὶ μιχθῆναι ἀνδρί.
τοῦ δὲ ᾿Απόλλωνος αὐτῷ χρήσαντος ὡς, ἐὰν τηρήσας ὀχεύοντας ὁμοίως τρώσῃ τὸν ἕνα, ἔσται οἷος ἦν, παραφυλάξαντα τὸν Τειρεσίαν ποιῆσαι τὰ ὑπὸ τοῦ θεοῦ ῥηθέντα καὶ οὕτως κομίσασθαι τὴν ἀρχαίαν φύσιν.
Διὸς δὲ ἐρίσαντος ῞Ηρᾳ καὶ φαμένου ἐν ταῖς συνουσίαις πλεονεκτεῖν τὴν γυναῖκα τοῦ ἀνδρὸς τῇ τῶν ἀφροδισίων ἡδονῇ, καὶ τῆς ῞Ηρας φασκούσης τὰ ἐναντία, δόξαι αὐτοῖς μεταπεμψαμένοις ἔρεσθαι τὸν Τειρεσίαν διὰ τὸ τῶν τρόπων ἀμφοτέρων πεπειρᾶσθαι. τὸν δὲ ἐρωτώμενον ἀποφήνασθαι, διότι μοιρῶν οὐσῶν δέκα τὸν ἄνδρα τέρπεσθαι τὴν μίαν, τὴν δὲ γυναῖκα τὰς ἐννέα.
τὴν δὲ ῞Ηραν ὀργισθεῖσαν κατανύξαι αὐτοῦ τοὺς ὀφθαλμοὺς καὶ ποιῆσαι τυφλόν, τὸν δὲ Δία δωρήσασθαι αὐτῷ τὴν μαντικὴν καὶ βιοῦν ἐπὶ γενεὰς ἐπτά.
The tale occurs most famously in book 3 of Ovid’s Metamorphoses (339-510). But, as this fragment indicates, we have fragments of a Hesiodic version as well. Apollodorus also reports the version favored by Pherecydes and Callimachus–that Teiresias was blinded after seeing Athena naked.
What is a little different about this version is the presence of Apollo and the claim that Zeus lengthened Teiresias’ life as part of his ‘reward’. This second part helps to explain Tiresias’ presence from the birth of Dionysus to the fall of Thebes with the Epigonoi.