History of the Peloponnesian War

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.

The Athenians sailed out against them from Naupactus with three and thirty ships, under the command of Diphilus.

The Corinthians at first remained stationary, but afterwards, having raised their signal for battle, when there appeared to be a favourable opportunity, they advanced upon the Athenians, and engaged them. For a long time they resisted each other;