Passage 2.5.6
Σικυώνιοι δὲ---οὗτοι γὰρ ταύτῃ Κορινθίοις εἰσὶν ὅμοροι---περὶ τῆς χώρας τῆς σφετέρας λέγουσιν ὡς Αἰγιαλεὺς αὐτόχθων πρῶτος ἐν αὐτῇ γένοιτο, καὶ Πελοποννήσου δὲ ὅσον ἔτι καλεῖται καὶ νῦν Αἰγιαλὸς ἀπʼ ἐκείνου βασιλεύοντος ὀνομασθῆναι, καὶ Αἰγιάλειαν αὐτὸν οἰκίσαι πρῶτον ἐν τῷ πεδίῳ πόλιν· οὗ δέ ἐστι νῦν σφίσι τὸ ἱερὸν τῆς Ἀθηνᾶς, ἀκρόπολιν τοῦτο εἶναι. Αἰγιαλέως δὲ Εὔρωπα γενέσθαι φασίν, Εὔρωπος δὲ Τελχῖνα, Τελχῖνος δὲ Ἆπιν.
The Sicyonians—for their land is adjacent to Corinth—say of their own territory that the first inhabitant born there was the indigenous Aigialeus. They add that the region of Peloponnesus still called Aigialos received its name from him during his reign, and that Aigialeus was the first to found a city called Aigialeia upon the plain. Where the sanctuary of Athena now stands, they say, was then its acropolis. They further state that from Aigialeus was born Europs, from Europs Telchis, and from Telchis Apis.