Passage 1.18.2
ὑπὲρ δὲ τῶν Διοσκούρων τὸ ἱερὸν Ἀγλαύρου τέμενός ἐστιν. Ἀγλαύρῳ δὲ καὶ ταῖς ἀδελφαῖς Ἕρσῃ καὶ Πανδρόσῳ δοῦναί φασιν Ἀθηνᾶν Ἐριχθόνιον καταθεῖσαν ἐς κιβωτόν, ἀπειποῦσαν ἐς τὴν παρακαταθήκην μὴ πολυπραγμονεῖν· Πάνδροσον μὲν δὴ λέγουσι πείθεσθαι, τὰς δὲ δύο---ἀνοῖξαι γὰρ σφᾶς τὴν κιβωτόν---μαίνεσθαί τε, ὡς εἶδον τὸν Ἐριχθόνιον, καὶ κατὰ τῆς ἀκροπόλεως, ἔνθα ἦν μάλιστα ἀπότομον, αὑτὰς ῥῖψαι. κατὰ τοῦτο ἐπαναβάντες Μῆδοι κατεφόνευσαν Ἀθηναίων τοὺς πλέον τι ἐς τὸν χρησμὸν ἢ Θεμιστοκλῆς εἰδέναι νομίζοντας καὶ τὴν ἀκρόπολιν ξύλοις καὶ σταυροῖς ἀποτειχίσαντας.
Above the sanctuary of the Dioscuri is the precinct of Aglauros. It is said that Athena entrusted Erichthonios, whom she had placed in a chest, to Aglauros and her sisters, Herse and Pandrosos, instructing them not to pry into the entrusted charge. Pandrosos, they say, obeyed this instruction, but the other two opened the chest, and upon viewing Erichthonios, they went mad and flung themselves from the steepest part of the Acropolis. It was at this very place that the Persians climbed up and slaughtered those Athenians who thought they understood the oracle better than did Themistocles and had fortified the Acropolis with timber and palisades.