Passage 2.30.2
θεῶν δὲ Αἰγινῆται τιμῶσιν Ἑκάτην μάλιστα καὶ τελετὴν ἄγουσιν ἀνὰ πᾶν ἔτος Ἑκάτης, Ὀρφέα σφίσι τὸν Θρᾷκα καταστήσασθαι τὴν τελετὴν λέγοντες. τοῦ περιβόλου δὲ ἐντὸς ναός ἐστι, ξόανον δὲ ἔργον Μύρωνος , ὁμοίως ἓν πρόσωπόν τε καὶ τὸ λοιπὸν σῶμα. Ἀλκαμένης δὲ ἐμοὶ δοκεῖν πρῶτος ἀγάλματα Ἑκάτης τρία ἐποίησε προσεχόμενα ἀλλήλοις, ἣν Ἀθηναῖοι καλοῦσιν Ἐπιπυργιδίαν· ἕστηκε δὲ παρὰ τῆς Ἀπτέρου Νίκης τὸν ναόν.
Of the gods, the Aeginetans honor especially Hecate, and celebrate annually a rite in her honor, saying that Orpheus the Thracian was the one who instituted this celebration for them. Within the enclosure is a temple, and the wooden image there is a work of Myron; it has one face and a single body. Alcamenes, in my opinion, first fashioned images of Hecate as three figures joined to one another, which the Athenians call Epipyrgidia ("On the Tower"); this stands beside the temple of Wingless Victory.