USTICA, an island off the N. coast of Sicily, 41^ m.N.N.W. of Palermo. Pop. (1861) 2231; (1901) 1916. It is the Osteodes of the Greeks, but in Roman times was known as Ustica. The island is entirely volcanic and subject to earthquakes, and is fertile. There is a considerable penal colony. There are some Roman tombs excavated in the rock.
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)