CASSITERIDES, in Ancient Geography, a cluster of islands to the west of the Land's End; opposite to Celtiberia, (Pliny); famous for their tin, which he calls candidum plumbum, formerly open to none but the Phcenicians; who alone carried on this commerce from Gades, concealing the navigation from the rest of the world, (Strabo). The appellation is from Cassiteros, the name for tin in Greek. Now thought to be the Scilly islands, or Sorlings, (Camden).