History of the Peloponnesian War
Thucydides
Thucydides. History of the Peloponnesian War. Crawley, Richard, translator. London and Toronto: J. M. Dent and Sons Ltd.; New York: E. P. Dutton and Co., 1914.
About the same time the Camarinaeans also came to the assistance of Syracuse with five hundred heavy infantry, three hundred darters and as many archers, while the Geloans sent crews for five ships, four hundred darters and two hundred horse.
Indeed almost the whole of Sicily, except the Agrigentines, who were neutral, now ceased merely to watch events as it had hitherto done, and actively joined Syracuse against the Athenians.
While the Syracusans after the Sicel disaster put off any immediate attack upon the Athenians, Demosthenes and Eurymedon, whose forces from Corcyra and the continent were now ready, crossed the Ionian gulf with all their armament to the Iapygian promontory,
and starting from thence touched at the Choerades Isles lying off Iapygia, where they took on board a hundred and fifty Iapygian darters of the Messapian tribe, and after renewing an old friendship with Artas the chief, who had furnished them with the darters, arrived at Metapontium in Italy.
Here they persuaded their allies the Metapontines, to send with them three hundred darters and two galleys, and with this reinforcement coasted on to Thurii, where they found the party hostile to Athens recently expelled by a revolution,
and accordingly remained there to muster and review the whole army, to see if any had been left behind, and to prevail upon the Thurians resolutely to join them in their expedition, and in the circumstances in which they found themselves to conclude a defensive and offensive alliance with the Athenians.
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,