MOLLUSCA TESTACEA MARIUM BRITANNICORUM. 



A HISTORY OF THE 



BRITISH MARINE TESTACEOUS MOLLUSCA, 



DISTRIBUTED IN THEIR NATURAL ORDER, 



ON THE 



BASIS OF THE ORGANIZATION OF THE ANIMALS ; 



WITH REFERENCES AND NOTES ON 



EVERY BRITISH SPECIES. 



BY 

 WILLIAM CLARK. 



LONDON: 



JOHN VAN VOORST, PATERNOSTER ROW. 

 M.DCCC.LV. 



