About the same time the Peloponnesians in the twenty-five ships stationed opposite to the squadron at Naupactus to protect the passage of the transports to Sicily, had got ready for engaging, and manning some additional vessels, so as to be numerically little inferior to the Athenians, anchored off Erineus in Achaia in the Rhypic country.
The place off which they lay being in the form of a crescent, the land forces furnished by the Corinthians and their allies on the spot, came up and ranged themselves upon the projecting headlands on either side, while the fleet, under the command of Polyanthes, a Corinthian, held the intervening space and blocked up the entrance.
The Athenians under Diphilus now sailed out against them with thirty-three ships from Naupactus,
and the Corinthians, at first not moving, at length thought they saw their opportunity, raised the signal, and advanced and engaged the Athenians.
After an obstinate struggle, the Corinthians lost three ships, and without sinking any altogether, disabled seven of the enemy, which were struck prow to prow and had their foreships stoven in by the Corinthian vessels, whose cheeks had been strengthened for this very purpose.
After an action of this even character, in which either party could claim the victory (although the Athenians became masters of the wrecks through the wind driving them out to sea, the Corinthians not putting out again to meet them) the two combatants parted.
No pursuit took place, and no prisoners were made on either side; the Corinthians and Peloponnesians who were fighting near the shore escaping with ease, and none of the Athenian vessels having been sunk.
The Athenians now sailed back to Naupactus, and the Corinthians immediately set up a trophy as victors, because they had disabled a greater number of the enemy's ships.
Moreover they held that they had not been worsted, for the very same reason that their opponent held that he had not been victorious; the Corinthians considering that they were conquerors, if not decidedly conquered, and the Athenians thinking themselves vanquished, because not decidedly victorious.
However, when the Peloponnesians sailed off and their land forces had dispersed, the Athenians also set up a trophy as victors in Achaia, about two miles and a quarter from Erineus, the Corinthian station.