164 FISH. 



amongst the lower classes in England, many 

 tons of them being annually sold in Billingsgate 

 market. 



PINNA NACRE. 



The pinnse sometimes grow to a large size, and 

 are found standing erect in the sand or mud in 

 deep water; they likewise fix themselves to] the 

 rocks by their byssus, and thus are not affected 

 by the agitation of the waves. 



To irivva, a wing or feather, the shape is so 

 nearly similar that we cannot doubt the derivation 

 of the generic name. 



