The Achaeans had ten selected magistrates called the demiurgs, constituting a council apart called the synarchy, which, with the strategus, prepared all the business that was introduced into their Senate.    From Wordnik.com.  [The Commonwealth of Oceana] Reference

But both the Senate of the Athenians, and that of the Achaeans, would have wondered if a man had told them that they were to receive all comers and discourses, to the end that they might refer them afterward to the Prytans or the synarchy, much less to an occasional committee, exposed to the catch that catch may of the parties interested.    From Wordnik.com.  [The Commonwealth of Oceana] Reference