History of the Peloponnesian War
Thucydides
Thucydides, Vol. 1-4. Smith, Charles Foster, translator. London and Cambridge, MA: Heinemann and Harvard University Press, 1919-1923.
After making this compact Therimenes turned over the command of the fleet to Astyochus and sailing away in a skiff was never seen again.[*](He was doubtless lost at sea. The word is used of unexplained disappearance in 4.80.4. Cf. also Xen. Hell., 1.6.38.)
But the Athenians at Lesbos, who had already crossed over with their army to Chios and exercised control over both land and sea, proceeded to fortify Delphinium, a place which in any case was strong on the landward side and also possessed harbours and was not far distant from the city of Chios.
As for the Chians, since they had been beaten in many battles already, and, besides, were not on very good terms among themselves—nay, now that Tydeus son of Ion and his adherents had already been put to death on the charge of Atticism by Pedaritus and the rest of the city was by compulsion reduced to the rule of an oligarchy, they were now filled with suspicion of one another—they kept quiet; and it was thought that neither they themselves, for these reasons, nor the auxiliaries under the command of Pedaritus were a match for the enemy.