Passage 8.29.5
τοῦ δὲ χωρίου τοῦ ὀνομαζομένου Βάθους σταδίους ὡς δέκα ἀφέστηκεν ἡ καλουμένη Βασιλίς· ταύτης ἐγένετο οἰκιστὴς Κύψελος ὁ Κρεσφόντῃ τῷ Ἀριστομάχου τὴν θυγατέρα ἐκδούς· ἐπʼ ἐμοῦ δὲ ἐρείπια ἡ Βασιλὶς ἦν καὶ Δήμητρος ἱερὸν ἐν αὐτοῖς ἐλείπετο Ἐλευσινίας. ἐντεῦθεν δὲ προϊὼν τὸν Ἀλφειὸν αὖθις διαβήσῃ καὶ ἐπὶ Θωκνίαν ἀφίξῃ, τὸ ὄνομα ἀπὸ Θώκνου τοῦ Λυκάονος ἔχουσαν, ἐς ἅπαν δὲ ἐφʼ ἡμῶν ἔρημον· ἐλέγετο δὲ ὁ Θῶκνος ἐν τῷ λόφῳ κτίσαι τὴν πόλιν. ποταμὸς δὲ ὁ Ἀμίνιος ῥέων παρὰ τὸν λόφον ἐς τὸν Ἑλισσόντα ἐκδίδωσι, καὶ οὐ πολὺ ἄπωθεν ἐς τὸν Ἀλφειὸν ὁ Ἑλισσών.
About ten stades from the place called Bathos is the site named Basilis. Cypselus was its founder, having given his daughter in marriage to Cresphontes, the son of Aristomachus. In my time Basilis was in ruins, and among these ruins there still remained a temple of Demeter Eleusinia. Proceeding from there, you again cross the Alpheios and reach Thoknia, named after Thoknos, the son of Lycaon, but wholly deserted by our day. Thoknos was said to have built the city on a hill. The river Aminius flows by this hill and empties into the Helisson, and not far away the Helisson itself joins the Alpheios.