an island in the Mozambique Channel, the farthest S. of the Comoro group, is situated about 160 miles from Madagascar, in S. Lat. 12° 54', and E. Long. 45° 15'. It is about 30 miles in length by 20 in breadth, and is for the most part of volcanic structure. It is mountainous, rising in some parts to the height of nearly 2000 feet; and many valleys and ravines occur, while the whole is covered by forests and luxuriant vegetation. The coast is indented with numerous bays, &c., and is surrounded by reefs, which render the landing difficult. The villages are two in number,—Choa, or Mayotta, the residence of the chief; and Zanodzi, on an island of the same name, which is included within the encircling reef. Mayotta has suffered much from the Madagascar pirates. It has been in the possession of the French since 1841. Pop. (1854) 6888.