CALLAS (Κάλλας), a smaller river on the north coast of Euboea, flowing into the sea near Oreus. (Strab. x. p.445.)
Dictionary of Greek and Roman Geography, illustrated by numerous engravings on wood. William Smith, LLD. London. Walton and Maberly, Upper Gower Street and Ivy Lane, Paternoster Row; John Murray, Albemarle Street. 1854.