Passage 8.41.5
τὴν δὲ Εὐρυνόμην ὁ μὲν τῶν Φιγαλέων δῆμος ἐπίκλησιν εἶναι πεπίστευκεν Ἀρτέμιδος· ὅσοι δὲ αὐτῶν παρειλήφασιν ὑπομνήματα ἀρχαῖα, θυγατέρα Ὠκεανοῦ φασιν εἶναι τὴν Εὐρυνόμην, ἧς δὴ καὶ Ὅμηρος ἐν Ἰλιάδι ἐποιήσατο μνήμην ὡς ὁμοῦ Θέτιδι ὑποδέξαιτο Ἥφαιστον. ἡμέρᾳ δὲ τῇ αὐτῇ κατὰ ἔτος ἕκαστον τὸ ἱερὸν ἀνοιγνύουσι τῆς Εὐρυνόμης, τὸν δὲ ἄλλον χρόνον οὔ σφισιν ἀνοιγνύναι καθέστηκε·
The people of Phigalia believe that Eurynome is an epithet of Artemis; but those among them who have inherited ancient traditions say that Eurynome was a daughter of Oceanus, whose name is also mentioned by Homer in the Iliad, where she, along with Thetis, is described as having received Hephaestus. Each year, on one specific day, they open the sanctuary of Eurynome; at all other times, it is their custom not to open it.