History of the Peloponnesian War

About the same time, the Peloponnesians in the five and twenty ships, who, to secure the passage of the merchantmen to Sicily, were anchored over against the fleet at Naupactus, having made their preparations for a sea-fight, and having manned some additional ships, so that they were now but little inferior to the Athenian force, stationed themselves off Erineus in Achae, in the territory of Rhypa.

And the place in which they were stationed being in the form of a crescent, their land forces which had come to their assistance from the Corinthians, and from their allies on the spot, were ranged on the projecting headlands on both sides; while the ships occupied the intervening space, blocking up the entrance. The commander of the fleet was Polyanthes, a Corinthian.