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Coastal ascidians collected over two centuries from Suez to Mozambique have been successively deposited in the MNHN and are now described and figured. Some of them were already known from the Indian Ocean, others are common to the Pacific, and some others are new species. Even though the present taxonomic work notably increases our knowledge of the tropical eastern African coast, it comprises so many miscellaneous collections from such distant points that it can only begin to suggest the diversity of ascidians there. © 2002 The Linnean Society of London. Zoological Journal of the Linnean Society, 2002, 135, 65–120.

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Two new species are described among the eight different ascidians collected in the northwest and the south-east bathyal bottoms of New Zealand. None is common to the littoral fauna.

Fifteen ascidian species were identified from 1 to 12 m depth in coastal waters of Bahrain, Arabian Gulf. Three new species, Aplidium rubripunctum, Didemnum yolky and Symplegma bahraini are described. Four species collected are cosmopolitan. This study increases knowledge of the ascidian fauna of an area for which only sporadic collections have previously been made.