PLATE CXL. 



markable gaping at the anterior end, and a name so applicable we 

 thought it best to retain. 



The cicatrix of the animal, in this kind, is different from that of 

 M. lutraria, a circumstance that has not escaped the observation of 

 Dr. Pultney. This author tells us, the Mactra hians is thrown up 

 in considerable quantities on all the smooth beaches he has seen on 

 the coast of Dorsetshire, particularly on the North shore at Poole, 

 opposite Branksea isle ; and that he has also seen it on the beaches at 

 Studland, Swanage, and Weymouth. We have observed it, but 

 not in abundance, on other sea-coasts. 



