ARTHURSTOWN, or KING'S-BAY, a post-town, in the parish of ST-JAMES, barony of SHELBURNE, county of WEXFORD, and province of LEINSTER, 9¼ miles (S. E. by S.) from New Ross, and 80 (S. by W.) from Dublin; containing 170 inhabitants. This place is situated on Waterford harbour, three miles below the junction of the rivers Barrow, Suir, and Nore, and derives its origin and name from its proprietor, Arthur, first and present Lord Templemore, whose seat is here, and by whom it has been mostly built within the last few years. The trade consists principally in the importation of coal and culm from South Wales, and slates from Bangor; and the exportation to Waterford of corn, pigs, butter, eggs, honey, and poultry. It has a commodious quay, with a gravelly strand open to Waterford harbour; and a pier of millstone grit found in the quarries here, 306 feet in length, and originally intended for the accommodation of the boats employed in the fishery, has been constructed at an expense of £3000, of which £700 was granted by the late Fishery Board, and the remainder was defrayed by Lord Templemore. Vessels of 100 tons' burden can come up close to the pier, but the entrance has lately become partially choked with an accumulation of mud, which requires speedy removal, and the adoption of some plan calculated to prevent a recurrence of the obstruction. The bay is subject to a heavy sea during the prevalence of south, south-west, and northwest winds. This place is a chief constabulary police station, and a station of the coast-guard. There is a dispensary, and a fever hospital was also built, but the Grand Jury, on application being made for its support, deemed it unnecessary. See JAMES-ST.