Passage 2.12.5
Ἄραντος δὲ υἱὸς Ἄορις καὶ θυγάτηρ ἐγένετο Ἀραιθυρέα. τούτους φασὶ Φλιάσιοι θηρᾶσαί τε ἐμπείρους γενέσθαι καὶ τὰ ἐς πόλεμον ἀνδρείους. προαποθανούσης δὲ Ἀραιθυρέας Ἄορις ἐς μνήμην τῆς ἀδελφῆς μετωνόμασεν Ἀραιθυρέαν τὴν χώραν· καὶ ἐπὶ τῷδε Ὅμηρος τοὺς Ἀγαμέμνονος ὑπηκόους καταλέγων τὸ ἔπος ἐποίησεν Ὀρνειάς τʼ ἐνέμοντο Ἀραιθυρέην τʼ ἐρατεινήν. Hom. Il. 2.571 τάφους δὲ τῶν Ἄραντος παίδων οὐχ ἑτέρωθι ἡγοῦμαι τῆς χώρας, ἐπὶ τῷ λόφῳ δὲ εἶναι τῷ Ἀραντίνῳ· καί σφισιν ἐπίθημα στῆλαι περιφανεῖς εἰσι, καὶ πρὸ τῆς τελετῆς ἣν τῇ Δήμητρι ἄγουσιν Ἄραντα καὶ τοὺς παῖδας καλοῦσιν ἐπὶ τὰς σπονδὰς ἐς ταῦτα βλέποντες τὰ μνήματα.
Aras had a son named Aoris and a daughter named Araithyrea. The Phliasians say these children became skilled hunters and courageous in warfare. When Araithyrea died before her brother, Aoris renamed the land Araithyrea in memory of his sister. It was due to this that Homer, listing the subjects of Agamemnon, composed the verse, "They inhabited Orneae and lovely Araithyrea." (Hom. Il. 2.571). The tombs of the children of Aras, I think, are not situated elsewhere in the country, but on the hill called Arantinus. Conspicuous gravestones stand there as monuments upon them, and before performing the initiatory rite that they celebrate in honor of Demeter, they summon Aras and his children during the libations while gazing upon these memorials.