B.C. Philip III. Arrhidaeus . . . . . . . . 323-316 Cassander . . . . . . . . 316-296 Philip IV. . . . . . . . . 296-295 Demetrius I. Poliorcetes . . . . . . . . 294-287 Pyrrhus . . . . . . . . 287-286 Lysimachus . . . . . . . . 286-280 Ptolemy Ceraunus and others . . . . . . . . 280-277 Antigonus Gonatas . . . . . . . . 277-239 Demetrius II . . . . . . . . 239-229 Antigonus Doson . . . . . . . . 229-220 Philip V . . . . . . . . 220-178 Perseus . . . . . . . . 178-167 In the following year Antigonus was succeeded by Philip V., the son of Demetrius II., who was then about sixteen or seventeen years of age. His youth encouraged the AEtolians to make predatory incursions into the Peloponnesus. That people were a species of freebooters, and the terror of their neighbours; yet they were united, like the Achaeans, in a confederacy or league. The Aetolian League was a confederation of tribes instead of cities, like the Achaean. The diet or council of the league, called the Panaetolicum, assembled every autumn, generally at Thermon, to elect the strategus and other officers; but the details of its affairs were conducted by a committee called APOCLETI, who seem to have formed a sort of permanent council, The AEtolians had availed themselves of the disorganised state of Greece consequent upon the death of Alexander to extend their power, and had gradually made themselves masters of Locris, Phocis, Boeotia, together with portions of Acarnania, Thessaly, and Epirus. Thus both the Amphictyonic Council and the oracle of Delphi were in their power. They had early wrested Naupactus from the Achaeans, and had subsequently acquired several Peloponnesian cities.