Tuscans and Phoenicians.  For a moment, indeed, it seemed as if the Syracusan power must be broken by the attack of the Athenians, whose naval expedition against Syracuse in the course of the Peloponnesian war (339-341) was supported by the Etruscans, old commercial friends of Athens, with three fifty-oared galleys.  But the victory remained, as is well known, both in the west and in the east with the Dorians.  After the ignominious failure of the Attic expedition, Syracuse became so indisputably the first Greek maritime power that the men, who were there at the head of the state, aspired to the sovereignty of Sicily and Lower Italy, and of both the Italian seas; while on the other hand the Carthaginians, who saw their dominion in Sicily now seriously in danger, were on their part also obliged to make, and made, the subjugation of the Syracusans and the reduction of the whole island the aim of their policy.  We cannot here narrate the decline of the intermediate Sicilian states, and the increase of the Carthaginian power in the island, which were the immediate results of these struggles; we notice their effect only so far as Etruria is concerned.  The new ruler of Syracuse, Dionysius (who reigned 348-387), inflicted on Etruria blows which were severely felt.  The far-scheming king laid the foundation of his new colonial power especially in the sea to the east of Italy, the more northern waters of which now became, for the first time, subject to a Greek maritime power.  About the year 367, Dionysius occupied and colonized the port of Lissus and island of Issa on the Illyrian coast, and the ports of Ancona, Numana, and Atria, on the coast of Italy.  The memory of the Syracusan dominion in this remote region is preserved not only by the “trenches of Philistus,” a canal constructed at the mouth of the Po beyond doubt by the well-known historian and friend of Dionysius who spent the years of his exile (368 et seq.) at Atria, but also by the alteration in the name of the Italian eastern sea itself, which from this time forth, instead of its earlier designation of the “Ionic Gulf",(3) received the appellation still current at the present day, and probably referable to these events, of the sea “of Hadria."(4) But not content with these attacks on the possessions and commercial communications of the Etruscans in the eastern sea, Dionysius assailed the very heart of the Etruscan power by storming and plundering Pyrgi, the rich seaport of Caere (369).  From this blow it never recovered.  When the internal disturbances that followed the death of Dionysius in Syracuse gave the Carthaginians freer scope, and their fleet resumed in the Tyrrhene sea that ascendency which with but slight interruptions they thenceforth maintained, it proved a burden no less grievous to Etruscans than to Greeks; so that, when Agathocles of Syracuse in 444 was making preparations for war with Carthage, he was even joined by eighteen Tuscan vessels of war.  The Etruscans perhaps had their fears in regard to Corsica, which they probably still at that time retained.  The old Etrusco-Phoenician symmachy, which still existed in the time of Aristotle (370-432), was thus broken up; but the Etruscans never recovered their maritime strength.