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While Part 2 of this series dealt with errant species from Cape shores and estuaries, the present paper deals with the sedentary forms. Ninety-four species are recorded or described; of these, 20 are new species or varieties and 15 are new records for the area.
The material was collected over the period 1932-1952 during the ecological surveys of shores and estuaries carried out by the Zoology Department of the University of Cape Town. The work was financed by grants from the Carnegie Foundation, the South African Council for Scientific and Industrial Research and the University of Cape Town. To all these bodies I tender my thanks. I am also indebted to the Zoology Department of Rhodes University for some specimens from the Eastern Province and to Miss E. B. Albrecht and Mr. R. W. Rand for specimens from South West Africa.
A generous grant from the C.S.I.R. enabled me to work for six months at the British Museum, examining the various collections housed there and comparing the present material with named specimens from other parts of the world or with the types. By courtesy of the Swedish State Museum, the Berlin Museum and the U.S. National Museum I was also able to see further types and collections from South Africa. This has made it possible to eliminate many incorrect records from the South African faunistic list. My work in England was facilitated by the friendly assistance of the officers of the British Museum, particularly Mr. Norman Tebble of the Annelid Department to whom I offer my sincere thanks.
During the course of this paper 20 type specimens are reviewed. For ease of reference these are listed below.
Indian Ocean, Western