An Archiannelid from South Africa

SEVERAL specimens of an Archiannelid were recently found on portions of the thallus of the prostrate alga, Codium Stephensiæ Dickinson, which had been kept in an aquarium for some months. They were also found to be abundant among the débris on the bottom of the tank. The Codium had been collected at Kommetjie on the Cape Peninsula some twenty-two miles south of Cape Town.