HELLAS, in Ancient Geography, an appellation comprising, according to the more ancient Greeks and Romans, Achaia and Peloponnese, but afterwards restrained to Achaia. It was bounded on the west by the river Achelous, on the north by Mounts Othrys and Oeta, on the east by the Egean sea, and on the south by the Saronic and Corinthian bays, and by the isthmus which joins it to Peloponnese. It was called Hellas, from Hellen the son of Deucalion; or from Hellas, a district of Theffaly; whence Hellenes, the gentilicious name, denoting Greek. Now called Livadia.