Passage 8.38.8
ἔστι δὲ ἐν τοῖς πρὸς ἀνατολὰς τοῦ ὄρους Ἀπόλλωνος ἱερὸν ἐπίκλησιν Παρρασίου· τίθενται δὲ αὐτῷ καὶ Πύθιον ὄνομα. ἄγοντες δὲ τῷ θεῷ κατὰ ἔτος ἑορτὴν θύουσι μὲν ἐν τῇ ἀγορᾷ κάπρον τῷ Ἀπόλλωνι τῷ Ἐπικουρίῳ, θύσαντες δὲ ἐνταῦθα αὐτίκα τὸ ἱερεῖον κομίζουσιν ἐς τὸ ἱερὸν τοῦ Ἀπόλλωνος τοῦ Παρρασίου σὺν αὐλῷ τε καὶ πομπῇ, καὶ τά τε μηρία ἐκτεμόντες καίουσι καὶ δὴ καὶ ἀναλίσκουσιν αὐτόθι τοῦ ἱερείου τὰ κρέα.
On the eastern slopes of the mountain there is a temple of Apollo surnamed Parrhasios; they also give him the title Pythios. Each year they hold a festival in the god's honor, at which they sacrifice a boar in the agora to Apollo Epikourios; after performing this sacrifice, they immediately carry the victim to the temple of Apollo Parrhasios, accompanied by a flute-player and a solemn procession. There they cut out the thigh-bones and burn them, and there too they consume the meat of the sacrificial animal.