The men of military age having assembled in arms at Megalopolis, in accordance with the decree of the federal assembly, the Messenian envoys once more came forward, and entreated the people not to disregard the flagrant breach of treaty from which they were suffering; and expressed their willingness to become allies of the league, and their anxiety to be enrolled among its members. The Achaean magistrates declined the offered alliance, on the ground that it was impossible to admit a new member without the concurrence of Philip and the other allies,—for the sworn alliance negotiated by Antigonus during the Cleomenic war was still in force, and included Achaia, Epirus, Phocis, Macedonia, Boeotia, Acarnania, and Thessaly;—but they said that they would march out to their relief, if the envoys there present would place their sons in Sparta, as hostages for their promise not to make terms with the Aetolians without the consent of the Achaeans. The Spartans among the rest were encamped on the frontier of Megalopolis, having marched out in accordance with the terms of their alliance; but they were acting rather as reserves and spectators than as active allies. Having thus settled the terms of the arrangement with the Messenians, Aratus sent a messenger to the Aetolians to inform them of the decree of the Achaean federation, and to order them to quit the territory of Messenia without entering that of Achaia, on pain of being treated as enemies if they set foot in it. When they heard the message and knew that the Achaeans were mustered in force, Scopas and Dorimachus thought it best for the present to obey. They therefore at once sent despatches to Cyllene and to the Aetolian Strategus, Ariston, begging that the transports should be sent to a place on the coast of Elis called the island of Pheia; and they themselves two days later struck camp, and laden with booty marched towards Elis. For the Aetolians always maintained a friendship with the Eleans that they might have through them an entrance for their plundering and piratical expeditions into the Peloponnese.