The poet calls Olenus and Pylene Ætolian cities, the former of which, of the same name as the Achæan city, was razed by the Æolians. It is near the new city Pleuron. The Acarnanians disputed the possession of the territory. They transferred Pylene to a higher situation, and changed its name to Proschium. Hellanicus was not at all acquainted with the history of these cities, but speaks of them as still existing in their ancient condition, but Macynia and Molycria, which were built subsequent to the return of the Heracleidæ, he enumerates among ancient cities, and shows the greatest carelessness in almost every part of his work.