History of the Peloponnesian War

And when the army was collected at Delphi, Eurylochus sent a herald to the Ozolian Locrians; for the road to Naupactus lay through their territory, and he also wished to induce them to revolt from Athens.

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.