History of the Peloponnesian War

The Athenians also returning home, the Megarians in the city most implicated in the Athenian negotiation, knowing that they had been detected, presently disappeared; while the rest conferred with the friends of the exiles, and restored the party at Pegae, after binding them under solemn oaths to take no vengeance for the past, and only to consult the real interests of the town.

However, as soon as they were in office, they held a review of the heavy infantry, and separating the battalions, picked out about a hundred of their enemies, and of those who were thought to be most involved in the correspondence with the Athenians, brought them before the people, and compelling the vote to be given openly, had them condemned and executed, and established a close oligarchy in the town—

a revolution which lasted a very long while, although effected by a very few partisans.

The same summer the Mitylenians were about to fortify Antandrus as they had intended, when Demodocus and Aristides, the commanders of the Athenian squadron engaged in levying subsidies, heard on the Hellespont of what was being done to the place (Lamachus their colleague having sailed with ten ships into the Pontus) and conceived fears of its becoming a second Anaia,—the place in which the Samian exiles had established themselves to annoy Samos, helping the Peloponnesians by sending pilots to their navy, and keeping the city in agitation and receiving all its outlaws. They accordingly got together a force from the allies and set sail, defeated in battle the troops that met them from Antandrus, and retook the place.

Not long after, Lamachus, who had sailed into the Pontus, lost his ships at anchor in the river Calex, in the territory of Heraclea, rain having fallen in the interior and the flood coming suddenly down upon them; and himself and his troops passed by land through the Bithynian Thracians on the Asiatic side, and arrived at Chalcedon, the Megarian colony at the mouth of the Pontus.