PLATE XIV. 



The Limpet is common on all the European mores. The outside 

 is generally encrusted with filth, balani, &c. beneath which, it has 

 an epidermis of a blackish colour. The shells vary exceedingly in 

 colours, not only in the different stages of growth, but also in the 

 adult state. When young, the colours are remarkably vivid and 

 elegantly disposed ; the shell flat and the margins deeply crenated : 

 those of full growth are on the contrary very conic and the colours 

 less brilliant. The margins irregular and the ridges more obsolete. 

 Some authors have considered several varieties as distinct species. 

 Da Costa among others, deems the Patella depressa of Pennant, 

 no other than a young variety of the common kind. 



