an arrondissement in the department of the Upper Pyrenees, in France, extending over 594 square miles, or 380,160 acres. It is divided into five cantons, and subdivided into 102 communes, with 36,912 inhabitants.—The chief city of the arrondissement is of the same name. It is situated in the beautiful valley of Lovedan, on the banks of the Save d'Auzun, with 860 inhabitants.