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.
The place where they were anchored was crescent-shaped, and the land army, consisting of the Corinthians and the allies from the neighbourhood, having come to their support, was drawn up on either side of them on the projecting headlands, while the ships held the intervening space blocking the entrance; and the commander of the fleet was Polyanthes, a Corinthian.
Against these the Athenians sailed out from Naupactus with thirty-three ships under the command of Diphilus.[*](He seems to have brought a reinforcement of fifteen ships and to have superseded Conon (cf. 7.31.4).)
At first the Corinthians kept quiet; then the signal was raised, when the moment seemed favourable, and advancing against the Athenians they engaged them. And for a long time they withstood one another. Three ships of the Corinthians were destroyed;