HIMERA, in Ancient Geography, the name of two important rivers of Sicily. The less important of the two was the Northern Himera, falling into the sea near the city of that name. It rose about the centre of the island not very far from the sources of the Southern Himera, and is by some identified with the modern Fiume di Termini. Others, however, are of opinion that the Northern Himera is now represented by the Fiume Grande, which falls into the sea about 8 miles E. of Termini. The Southern Himera rose in the Mons Nebrodes (Monte di Madonia), and flowing nearly due S., fell into the sea at Phintias (Alicata). It is now called the Fiume Salso, or Salt River. On its banks Agathocles was defeated by the Carthaginians, B.C. 311, and they by Marcellus, B.C. 212.