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6. — General Catalogue of South African Crustacea (Part V. of S.A. 

 Crustacea, for the Marine Investigations in South Africa)*. — By 

 the Eev. Thomas R. R. Stebbing, M.A., F.R.S., F.L.S., F.Z.S., 

 Fellow of King's College, London, Hon. Memb. New Zealand 

 Inst., Hon. Fellow Worcester College, Oxford. 



The first part of this treatise on the crustacean fauna of South 

 Africa was published ten years ago. A systenoatic review of the 

 subject was then and has since been deferred, in order that impor- 

 tant additions to our knowledge of it, resulting from recent researches, 

 might be more or less adequately dealt with. In the meantime the 

 extensive collections made by Dr. Gilchrist, during the Pieter 

 Faure expeditions, together with material provided by Dr. P^ringuey 

 and several other naturalists, have so greatly enlarged the task of 

 description, that any methodical survey has run a chance of being 

 indefinitely postponed. Over and over again, in drawing up this 

 present Catalogue, I have felt that it may be misleading, should 

 any one hastily infer from it that such and such tribes or families 

 are scantily represented, or that this or that genus has no species, in 

 South African waters. Almost at every point I have been tempted 

 to linger over the illustration and definition of new species, or the 

 discussion of forms not hitherto recorded from the district. As will 

 be seen, the temptation has sometimes been too strong to be over- 

 come. Thus a crab so long known as Hexapus sexpes (Fabricius) 

 has been drawn and quartered afresh ; a new crab has been described 

 and figured as Nasinatalis disjunctipes in the tribe Oxystomata ; 

 further, the plates claim to exhibit a new Pagurid, a new Isopod, two 

 new CaprelHds, and two new species of Sympoda, one of them 

 suggesting the institution of a new genus and a new family. 

 Obviously, however, most of the Catalogue deals with names already 



• Parts I.-III. have been published in the " Marine Investigations in South 

 Africa," Part IV. in Vol. VI. of the Annals of the South African Museum. 



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