Passage 8.25.4
τούτου τὰ πολλὰ ἐς ἔδαφος ἔκειτο ἤδη. μετὰ δὲ Θέλπουσαν ἐπὶ τὸ ἱερὸν τῆς Δήμητρος ὁ Λάδων κάτεισι τὸ ἐν Ὀγκείῳ· καλοῦσι δὲ Ἐρινὺν οἱ Θελπούσιοι τὴν θεόν, ὁμολογεῖ δέ σφισι καὶ Ἀντίμαχος ἐπιστρατείαν Ἀργείων ποιήσας ἐς Θήβας· καί οἱ τὸ ἔπος ἔχει, Δήμητρος τόθι φασὶν Ἐρινύος εἶναι ἔδεθλον. Antimachus, unknown location. ὁ μὲν δὴ Ὄγκιος Ἀπόλλωνός ἐστι κατὰ τὴν φήμην καὶ ἐν τῇ Θελπουσίᾳ περὶ τὸ χωρίον ἐδυνάστευε τὸ Ὄγκιον, τῇ θεῷ δὲ Ἐρινὺς γέγονεν ἐπίκλησις·
Most of this temple already lay in ruins. After passing Thelpusa, the river Ladon flows down toward the sanctuary of Demeter at Onkeion. The Thelpusians call the goddess Erinys (Fury), and Antimachus agrees with them, having recorded the Argives’ expedition against Thebes. He has expressed this in the verse: "There, they say, is the seat of Demeter Erinys." Of this Antimachus nothing further is known. Onkeios, according to tradition, was a surname of Apollo, who once held lordship over that region around Thelpusa called Onkeion. Yet the goddess received the surname Erinys (Fury).