Passage 1.8.6
τοῦ θεάτρου δὲ ὃ καλοῦσιν Ὠιδεῖον ἀνδριάντες πρὸ τῆς ἐσόδου βασιλέων εἰσὶν Αἰγυπτίων. ὀνόματα μὲν δὴ κατὰ τὰ αὐτὰ Πτολεμαῖοί σφισιν, ἄλλη δὲ ἐπίκλησις ἄλλῳ· καὶ γὰρ Φιλομήτορα καλοῦσι καὶ Φιλάδελφον ἕτερον, τὸν δὲ τοῦ Λάγου Σωτῆρα παραδόντων Ῥοδίων τὸ ὄνομα. τῶν δὲ ἄλλων ὁ μὲν Φιλάδελφός ἐστιν οὗ καὶ πρότερον μνήμην ἐν τοῖς ἐπωνύμοις ἐποιησάμην, πλησίον δέ οἱ καὶ Ἀρσινόης τῆς ἀδελφῆς ἐστιν εἰκών.
In front of the theater called the Odeion are statues of Egyptian kings by the entrance. All of them are named alike, Ptolemy, but each has his own additional surname. Thus one they call Philometor, another Philadelphos, and the title Soter ("Savior") was given to the son of Lagus by the Rhodians. Another Philadelphos among them is the one whom I have previously mentioned in my account of the Eponymous Heroes, and close by stands an image of his sister, Arsinoe.