(5.39) During the same winter the Olynthians made a sudden attack upon Mecyberna,47 which was held by an Athenian garrison, and took it. The Athenians and Lacedaemonians still continued to negotiate about the places which had not been restored, the Lacedaemonians hoping that, if the Athenians got back Panactum from the Boeotians, they might themselves recover Pylos. So they sent an embassy to the Boeotians, and begged of them to give up Panactum and the Athenian prisoners to themselves, that they might obtain Pylos in return for them. But the Boeotians refused to give them up unless the Lacedaemonians made a separate alliance with them as they had done with the Athenians. Now the Lacedaemonians knew that, if they acceded to this request, they would be dealing unfairly with Athens, because there was a stipulation which forbade either state to make war or peace without the consent of the other; but they were eager to obtain Panactum and thereby, as they hoped, recover Pylos. At the same time the party who wished to break the peace with Athens were zealous on behalf of the Boeotians. So they made the alliance about the end of winter and the beginning of spring. The Boeotians at once commenced the demolition of Panactum; and the eleventh year of the war ended.