108 



UNIVALVES. — PATELLA. 



state, as is also the Patella Echinata or Spiny Limpet, 

 which is from the neighbourhood of Crignou. 



The Patelloe are usually found adhering by their base 

 to rocks, stones, fuci, and other marine substances, from 

 which they are with much difficulty removed. They in- 

 habit the following places, viz. the Indian, Southern, Eu- 

 ropean, Northern, and Mediterranean seas, the American 

 and Indian Islands, the Atlantic, and the shores of China, 

 Greenland, and Iceland. 



The Patellae probably derive their name from their re- 

 semblance to a little dish or bason reversed. 



