Opisthobranchiate Mollusca from Tanzania (Suborder: Doridacea)

Twenty-two species of Doridacea are described from the vicinity of Dar es Salaam, Tanzania. None is new to science, but one species of the genus Gymnodoris was too immature to be fully identified. Ten of the 22 species are known from the Hawaiian Islands, indicating that many species of dorid occur throughout the Indian Ocean and the Pacific as far as Hawaii. One species (Jorunna tomentosa) appears to be cosmopolitan, and two may possibly be confined to the coast of Africa (Chromodoris annulata and C. vicina). Sixty-nine species of dorid have already been reported from Tanzania by Eliot. Nine species in the present collection were not found by him, so 78 are now known from the area.