Xanthica. A military festival observed by the Macedonians in the month called Xanthicus (our April), instituted about 392 B.C.

Xanthus. The most famous city of Lycia, stood on the western bank of the river of the same name, 60 stadia from its mouth. Twice in the course of its history it sustained sieges, which terminated in the self-destruction of the inhabitants with their property, first against the Persians under Harpagus, and long afterward against the Romans under Brutus. The city was never restored after its destruction by the latter.

Xeres de la Frontera. A town in the southwest of Spain, in the province of Cadiz, 14 miles northeast from Cadiz. At the battle of Xeres, July 19-26, 711, Roderic, the last Gothic sovereign of Spain, was defeated and slain by the Saracens, commanded by Tarik and Muza.

Ximena (Southern Spain). The site of a battle between the Spanish army under the command of Gen. Ballasteros, and the French corps commanded by Gen. Regnier, September 10, 1811. The Spaniards defeated their adversaries; the loss was great on both sides.