Passage 2.25.6
ἐκαλοῦντο δὲ ἀπὸ Ὀρνέως τοῦ Ἐρεχθέως· τοῦ δὲ Ὀρνέως ἦν τούτου Πετεώς, τοῦ δὲ Μενεσθεύς, ὃς Ἀγαμέμνονι μετὰ Ἀθηναίων τὴν Πριάμου συγκαθεῖλεν ἀρχήν. ἀπὸ μὲν δὴ τούτου τὸ ὄνομα ἐγένετο τῇ πόλει, Ἀργεῖοι δὲ ὕστερον τούτων Ὀρνεάτας ἀνέστησαν· ἀναστάντες δὲ σύνοικοι γεγόνασιν Ἀργείοις. ἔστι δὲ ἐν ταῖς Ὀρνεαῖς Ἀρτέμιδός τε ἱερὸν καὶ ξόανον ὀρθὸν καὶ ἕτερος ναὸς θεοῖς πᾶσιν ἐς κοινὸν ἀνειμένος. τὰ δὲ ἐπέκεινα Ὀρνεῶν ἥ τε Σικυωνία καὶ ἡ Φλιασία ἐστίν.
They were named after Orneus, the son of Erechtheus; the son of this Orneus was Peteos, and Peteos’ son was Menestheus, who joined Agamemnon in overthrowing Priam's kingdom with the Athenians. From him the city took its name; afterwards the Argives expelled the inhabitants of Orneae, who, after their expulsion, became fellow-residents with the Argives. At Orneae there is a temple of Artemis with an upright wooden image, and another temple consecrated in common to all the gods. Beyond Orneae lie Sicyon and Phlius.