CLUSIUM, anciently called Camars, (Virgil, Livy); a town of Tuscany, at the south end of the Palus Clusina, where it forms the Clanis; the royal residence of Porcena, three days journey from Rome to the north, (Polybius). Clusinus the epithet. Clusini Veteres the people. Now Chiusi. E. Long. 13. Lat. 43.—Clusium Novum, was a town of Tuscany, near the springs of the Tiber, in the territory of Arretium; where lies the Ager Clusinus; now called Casentino. Clusini Novi, the people, (Pliny).