Passage 8.37.6
τὰ μὲν δὴ ἐς τὸν Ἄνυτον ὑπὸ Ἀρκάδων λέγεται· Δήμητρος δὲ Ἄρτεμιν θυγατέρα εἶναι καὶ οὐ Λητοῦς, ὄντα Αἰγυπτίων τὸν λόγον Αἰσχύλος ἐδίδαξεν Εὐφορίωνος τοὺς Ἕλληνας. τὰ δὲ ἐς Κούρητας---οὗτοι γὰρ ὑπὸ τῶν ἀγαλμάτων πεποίηνται---καὶ τὰ ἐς Κορύβαντας ἐπειργασμένους ἐπὶ τοῦ βάθρου---γένος δὲ οἵδε ἀλλοῖον καὶ οὐ Κούρητες---, τὰ ἐς τούτους παρίημι ἐπιστάμενος.
Such are indeed the Arcadians' accounts concerning Anytus. That Artemis is the daughter of Demeter and not of Leto is originally an Egyptian tradition, and it was Aeschylus, son of Euphorion, who taught it to the Greeks. Regarding the Curetes—for these figures have been carved under the statues—and the Corybantes depicted upon the base (who are a different race entirely and distinct from the Curetes), knowing these matters, I willingly pass them by.