CONCHOLOGY. 



JL HE variety and beautiful colours which are discover- 

 able in the testaceous Family of Shells, have always ren- 

 dered them an interesting subject to the Naturalist and the 

 Man of Taste. 



In describing the four Shells contained in the annexed 

 Plate, we shall endeavour previously to explain the different 

 Characters of each Genus, that the Reader may afterwards 

 more easily recognize each peculiar Distinction appropriate 

 thereto. 



Shells have always been classed according to certain 

 Similarities of Structure, observable in their outward form, 

 and not from the qualities of the Animals contained in them, 

 which are, generally speaking, quite unknown, except 

 from Analogy to those which in the living state, are more 

 easily within our reach, 



In each Species, we shall elucidate the Genus to which 

 it belongs, by its most striking peculiarities. 



