one of the Marquis of Mendoza's Islands, in the Southern Pacific Ocean. It is about nine miles in length and twenty-one in circumference, and is intersected by a narrow ridge of hills, which are divided by deep, narrow, and fertile valleys, well watered, and adorned with trees. This, with other three islands which lie near it, was discovered in July 1595, by Alvaro Mendana, who gave them their name, in honour of the viceroy of Peru. A cove in which the European vessels usually anchored is situated in long. 139° 8. W. and lat. 9° 55. S.