Passage 4.1.6
τὴν δὲ τελετὴν τῶν Μεγάλων θεῶν Λύκος ὁ Πανδίονος πολλοῖς ἔτεσιν ὕστερον Καύκωνος προήγαγεν ἐς πλέον τιμῆς· καὶ Λύκου δρυμὸν ἔτι ὀνομάζουσιν ἔνθα ἐκάθηρε τοὺς μύστας. καὶ ὅτι μὲν δρυμός ἐστιν ἐν τῇ γῇ ταύτῃ Λύκου καλούμενος, Ῥιανῷ τῷ Κρητί ἐστι πεποιημένον πάρ τε τρηχὺν Ἐλαιὸν ὑπὲρ δρυμόν τε Λύκοιο· Rhianus of Bene in Crete. See note on Paus. 4.6.1 .
The mysteries of the Great Gods were raised to greater esteem, many years after Caucon, by Lycus, son of Pandion; even now they still call the grove of Lycus the place where he used to perform the purification of initiates. That there is indeed a grove in this region called after Lycus is attested by Rhianus the Cretan, who composed the following verse: "beside the rugged Elaeus and above Lycus' grove."