: PLATE XXIL 
It is not uncommon on many of the British coasts*. Adanson 
has a variety of it (8) from Senegal ; and other authors mention the 
same species as a native of the East Indian and African seas. 
* This species is not uncommon on many of our coasts, and in great plenty on some, 
_ as at the Scilly Islands; at Liverpool, where they are called Cockspurs; at Scarborough, 
after winter storms, according to Lister; at Exmouth, and other places on the western 
shores; and I have received very fine and perfect ones from the coasts of Wales, as 
Flintshire, Pwlbely in Carnarvonsbire, and Barmouth in Merionethsbire. It is also a Shell of 
the Orkneys., Da Costa. 
