Ann Arroo, or Aroe, a group of about 80 islands in the Malay archipelago, north of Australia, between lat. 5° and 7° S., and lon. 134° and 135° E. At the end of them is a considerable reef of coral, where pearls and tripang abound. The products are pearls, mother-of-pearl, tortoise-shell, birds of paradise, and tripang. Dobbo, a town in the island of Wam-ma, is the entrepot of the islands, and imports calicoes, iron, hardware, and gunpowder, shipped from Singapore. The population numbers about 14,000, a few of whom are Christians. There are two or three native teachers from Amboyna.