332- skixH : nomenclature of certain genErA. 



now the more intimate knowledge of the animals, and especially 

 the characters derived from a study of the radulffi, has revealed 

 differences which separate them from Ftisus as at present 

 restricted. This genus is now known to have relationship with 

 \}ci^ Fasciolariidcoxz.\}i\tx than with {h^Bi/ccinidce, to which family 

 it has been shown, belong the several British forms usually 

 placed in Fustis. 



These alterations appear to be universally accepted on the 

 Continent and in America, but not so here. It is to be hoped' 

 that the 'Revision of British Conchology' in course of publication 

 by the Rev. Canon Norman in the ' Annals and Magazine of 

 Natural History 'will have a beneficial influence in this respect. 



British Conchologists have their Jeffreys in happy 

 remembrance, and seem to forget that time is fleeting, and, 

 that to follow in his sober footsteps, is not to advance with the 

 rational progress of science. 



Even Jeffreys himself in his day was rather too conservative 

 in his opinions, but, to some extent, with respect to nomen- 

 clature, in advance of his rivals Forbes and Hanley. 



One of the greatest troubles which beset Conchologists is 

 to know under what genera to place certain species. This 

 arises from the fact that in our standard works on British 

 moUusca the generic terms are not fully discussed. In many 

 cases the same species are located under different generic 

 names in the works of Forbes and Hanley, Jeffreys, Reeve, 

 Turton, Norman, &c., and it is in the hope of throwing some 

 light upon these discrepancies, that I have put together the 

 following notes. 



The first case which I desire to bring before the notice of 

 the members is the employment of the name Viviparus instead 

 of Palndina ; but, in doing so, I do not pretend that, in this 

 and other cases, I have more to point out than has already 

 been shown by other writers. My object is to present to British 

 Conchologists, in an English journal, the reasons why certain 

 usually accepted names ought to be changed if we wish to act 



J.C., vi., Apr., 1891, 



