History of the Peloponnesian War
Thucydides
Thucydides, Vol. 1-4. Smith, Charles Foster, translator. London and Cambridge, MA: Heinemann and Harvard University Press, 1919-1923.
When they had received back their dead from the Aetolians under a truce and had retreated to Naupactus, they were afterwards taken back by the fleet to Athens. Demosthenes, however, remained behind in Naupactus and the region round about, for he was afraid of the Athenians because of what had happened.
About the same time the Athenian forces over in Sicily sailed to Locris[*](ie. the territory of the Epizephyrian Locri, north of Rhegium in Italy.) and disembarking there defeated the Locrians who came against them and took a guard-house which was situated on the river Halex.