Biscoe Islands is a series of islands, of which the principal ones are Renaud, Lavoisier (named Serrano by Chile and Mitre by Argentina), Watkins, Krogh, Pickwick and Rabot, lying parallel to the west coast of Graham Land and extending 150 km (81 nmi) between Southwind Passage on the northeast and Matha Strait on the southwest. Another group of islands are the Adolph Islands. The islands are named for John Biscoe, the commander of a British expedition which explored the islands in February 1832.