History of the Peloponnesian War

Of the Locrians the people of Amphissa co-operated with him chiefly, these being afraid on account of their enmity to the Phocians; and after these had taken the lead in giving him hostages they persuaded the rest, who were afraid of the invading army, to do likewise—first their neighbours the Myoneans, who held the country from which Locris was most difficult of access, then the Ipneans, Messapians, Tritaeeans, Chalaeans, Tolophonians, Hessians and Oeantheans. All these tribes also took part in the expedition. The Olpaeans gave hostages, but did not take the field with the others; and the Hyaeans refused to give hostages until a village of theirs, Polis by name, was taken.

When all preparations had been made, and the hostages had been deposited at Cytinium in Doris, Eurylochus advanced with his army against Naupactus through the Locrian territory, taking on his march two of their towns, Oeneon and Eupalium, which refused to yield.

And when they reached the territory of Naupactus, the Aetolians meanwhile having come to their support, they ravaged the land and took the outer town, which was not fortified; and advancing against Molycreium, a colony founded by the Corinthians but subject to Athens, they took it.