History of the Peloponnesian War

For the stream is wide and deep and turbid, and the islands are close together and serve to bind to one another the bars as they are formed, preventing them from being broken up, since the islands lie, not in line, but irregularly, and do not allow straight channels for the water into the open sea. These islands are uninhabited and not large.

There is a story that when Alemaeon son of Amphiaraus was a wanderer after the murder of his mother,[*](Eriphyle.) Apollo directed him by oracle to inhabit this land, intimating that he would have no release from his fears until he should find and settle in a country which at the time he killed his mother had not yet been seen by the sun, and was not even land then, for all the rest of the earth had been polluted by him.

And he, in his perplexity, at last, as the story goes, observed this sand-bar formed by the Achelous, and he surmised that during the long time he had been wandering since he had slain his mother enough land would have been silted up to support life in. So he settled there in the region of Oeniadae, founded a principality, and left to the country its name Acarnania, after that of his son Acarnan. Such is the tradition which we have received concerning Alcmaeon.