prytanes
The Prytanes were a council of fifty male citizens of Athens who served as the executive body of the Athenian government. They were chosen by lot from the ten tribes of Athens, with five prytanes from each tribe serving in rotation. The office of the prytanes was held for one tenth of the year, corresponding to one of the ten Athenian months. The prytanes were responsible for presiding over the Boule, the Athenian council, and for carrying out its decisions. They also had significant administrative and judicial powers.
The prytanes met daily in the Tholos, a circular building located in the Agora. They were responsible