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LIST OF BRITISH MARINE MOLLUSCA & BRACHIOPODA. 
vha 

PREPARED BY A COMMITTEE OF THE CONCHOLOGICAL SOCIETY. 

As no list of British Marine Mollusca has been published for fourteen 
years, 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 (Azz. 
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 
Nature” of Linné 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 Po/t)). 
v. dumasi Payraudeat. 
The names of a few species whose claims to be regarded as British 
are very doubtful have been placed in square brackets: thus— 
[islandicus AZi//er]. 
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. ‘. 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, SMITHSON IAA 
APR 28 1988 
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