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A LIST OF SPECIES OF MOLLUSCA FROM SOUTH AFRICA, 
FORMING AN APPENDIX TO G. B. SOWERBY’S ‘MARINE 
SHELLS OF SOUTH AFRICA.” 
By Enear A. Suita, F.Z.S., ete. 
Read 12th June, 1903. 
PLATE XY. 
Unrit the year 1848, when Dr. Ferdinand Krauss published his work 
on the Mollusca of South Africa, the fauna of that region had not 
received very special attention. In that work he quoted only about 
365 marine forms, but subsequently, in a paper in Wiegmann’s Archiv 
fiir Naturgeschichte, 1852, he mentioned a few additional species. 
In 1874 Dr. E. von Martens’ gave a list of a collection made by 
Dr. G. Fritsch, in which he enumerated a considerable number of 
species which were either overlooked by Krauss or were described 
after the publication of that author’s work. In 1892 was published 
the ‘‘Marine Shells of South Africa,” by G. B. Sowerby, which was 
issued as ‘‘a catalogue of all the known species.” Unfortunately, the 
incompleteness of this list was very considerable, and therefore in 
1897 he deemed it advisable to publish an Appendix, in which he 
gave not only descriptions of a considerable number of new species, 
but also references to many which had been omitted from his original 
list, and others which had been identified as coming from South Africa 
in the interval between the publication of the two parts of his book. 
Whilst admitting the usefulness of this work, it must be observed 
that its utility is in a considerable measure marred by its incom- 
pleteness. In the first place, it seems a pity that only the shell-bearing 
forms of Mollusca were treated of, so that anyone requiring information 
respecting the Cephalopoda, Nudibranchia, etc., has to seek it elsewhere. 
Then, again, there is a considerable number of species (about 80) 
which had been recorded from South Africa, that were entirely 
overlooked. 
To remedy this incompleteness, and as a further contribution to our 
knowledge of the fauna, the following list has been compiled. In it 
will be found over 300 species not in the ‘‘ Marine Shells of South 
Africa,” the majority of which are either new species or have been 
identified as South African since the publication of Mr. Sowerby’s work. 
The collection upon which this list has to a great extent been based 
has been presented to the British Museum by Mr. J. H. Ponsonby, 
who has, for several years past, carried on an extensive correspondence 
with Mr. H. Burnup, Mr. F. Quekett, and various other collectors in 
1 Jahrb. Deutsch. Malak. Gesell., 1874, pp. 119-146. 
