Passage 6.22.3
ταύτας τὰς Ὀλυμπιάδας καὶ ἐπʼ αὐταῖς τὴν τετάρτην τε καὶ ἑκατοστήν, τεθεῖσαν δὲ ὑπὸ Ἀρκάδων, ἀνολυμπιάδα ς οἱ Ἠλεῖοι καλοῦντες οὐ σφᾶς ἐν καταλόγῳ τῶν Ὀλυμπιάδων γράφουσιν. ὀγδόῃ δὲ ἐπὶ ταῖς τεσσαράκοντα Ὀλυμπιάδι Δαμοφῶν ὁ Πανταλέοντος ὑπόνοιαν μέν τινα παρέσχεν Ἠλείοις νεώτερα ἐς αὐτοὺς βουλεύειν, ἐσβαλόντας δὲ ἐς τὴν Πισαίαν σὺν ὅπλοις ἀπελθεῖν οἴκαδε ἀπράκτους ἔπεισε δεήσεσί τε καὶ ὅρκοις.
These Olympiads, including the hundred and fourth Olympiad itself, which was held by the Arcadians, the Eleans call an "Anolympiad" and do not include it in their list of Olympiads. In the forty-eighth Olympiad afterwards, Damophon son of Pantaleon gave the Eleans suspicion that he was plotting new troubles against them. However, he convinced them, through entreaties and oaths, to withdraw empty-handed and return home after they had invaded the territory of Pisa under arms.