a country touching Pamphyllia and Cilicia on the north, rugged and mountainous, situated almost in mount Taurus, and taking its name from Isaura; according to some, extending to the Mediterranean by a narrow slip. Stephanus, Ptolemy, and Zosimus, make no mention of places on the sea; though Pliny does. ISCA Silurum (anc. geog.); the station of the Legio II. Augusta, in Britain. Now Caerleon, a town of Monmouthshire, on the Usk.