in Ancient Geography, a river of Umbria, on this side of the Apennines. According to Pliny, it was a fountain consisting of several veins, situated be- between Hispellum and Spoletium, which soon after swelled into a navigable river, running from east to west into the Tinia, and both together into the Tiber. This river was famous for its milk-white flocks and herds. The god of the river was called Clitumnus.