Passage 6.24.8
ἔστι δὲ καὶ Σιληνοῦ ναὸς ἐνταῦθα, ἰδίᾳ τῷ Σιληνῷ καὶ οὐχ ὁμοῦ Διονύσῳ πεποιημένος· Μέθη δὲ οἶνον ἐν ἐκπώματι αὐτῷ δίδωσι. θνητὸν δὲ εἶναι τὸ γένος τῶν Σιληνῶν εἰκάσαι τις ἂν μάλιστα ἐπὶ τοῖς τάφοις αὐτῶν· ἐν γὰρ τῇ Ἑβραίων χώρᾳ Σιληνοῦ μνῆμα καὶ ἄλλου Σιληνοῦ Περγαμηνοῖς ἐστιν.
Here also is a sanctuary dedicated to Silenus, made specifically for Silenus alone and not shared with Dionysus. Within it, Drunkenness offers Silenus wine in a cup. One might especially conjecture that the race of Sileni is mortal based on their tombs: in the land of the Hebrews there exists a monument of a Silenus, and similarly another Silenus has a tomb among the Pergamenes.