But Athens sent Demosthenes, Hegesippus, Polyeuctus and others to rouse the Corinthians to resistance, and also dispatched a force of citizens to Acarnania to help in the defence against Philip. Philip thereupon returned, captured Echinus and Nicaea on the Malian Gulf, and established a tetrarch in each division of Thessaly (343 B.C., or early in 342). In 342 Philistides was established, by Philip's influence, as tyrant at Oreus in Euboea (as Cleitarchus had been at Eretria in the preceding year), and the democratic leader Euphraeus committed suicide in prison.[1] The town of Chalcis, however, under Callias and Taurosthenes, remained friendly to Athens, and made a treaty of alliance with her.