The College of Pontiffs was a body of the ancient Roman state whose members were the highest-ranking priests of the state religion. The college consisted of the pontifex maximus and the other pontifices, the rex sacrorum, the fifteen flamens, and the Vestals. The College of Pontiffs was one of the four major priestly colleges; originally their responsibility was limited to supervising both public and private sacrifices, but as time passed their responsibilities increased. The other colleges were the augures, the quindecimviri sacris faciundis , and the epulones.