LIST OF BRITISH MARINE MOLLUSCA & BRACHIOPODA. 



Prepared ky a Committee of The Conchological Society. 



As no list of British Marine Mollusca has been pubhshed for fourteen 

 )'ears, the undersigned were appointed a Committee to prepare a new 

 one, incorporating the results of recent researches. 



The British area for this purpose has been taken as defined by the 

 Rev. Canon Norman, with the addition of the Channel Islands {Ann. 

 and Mag. Nat. Hist. (6) vol. 5, p. 345, 454, 1890). 



In the matter of classification the Committee have not followed any 

 individual system, but have endeavoured to adopt the most recent views 

 of specialists in each department. The tenth edition of the "Systema 

 Naturae" of IJnne has been taken as the starting-point of binomial 

 nomenclature. Authorities for species which have since their creation 

 been transferred to different genera are given in parentheses. 



Since Jeffreys' "British Conchology" still necessarily forms the text- 

 book of our collectors, it has been thought advisable in those cases 

 where the name adopted in this list differs from that used by Jeffreys 

 to give the latter in square brackets : thus — 



Pteria Scopoli[=Avicuia]. 



When a variety only, and not the typical form of the species, is 

 British, the name of the latter is placed in parentheses : thus — 



(clavatus PoU)). 



V. dumasi Payraudcau. 



The names of a few species whose claims to be regarded as British 

 are very doubtful have been placed in square brackets : thus — 

 [islandicus Mulkr\. 



A number of varietal names, apparently based merely on monstrous, 

 stunted, aborted or young specimens, have been omitted. 



The Committee have to acknowledge the kind assistance of the 

 following gentlemen : — Messrs. W. H. Dall, J. T. Marshall, R. B. 

 Newton, E. A. Smith, R. Standen, E. R. Sykes, B. B. Woodward, and 

 the Rev. Canon A. M. Norman. These gentlemen must not, how- 

 ever, be held responsible for any of the shortcomings of the list. 



The Committee have found the amount of agreement between 

 different authorities greater than had been anticipated, but there are still 

 many questions on which the discrepancies of opinion have been 

 irreconcilable, and in some cases the members of the Committee have 

 not been able to arrive at an agreement. The Committee feel there- 

 fore that the results of their efforts cannot be taken as in anyway 

 final ; if, however, they have succeeded in producing a document 

 which will be a help to students of conchology the object of their 

 appointment will have been fulfilled. 



