Thanks John for answering my question, but are you suppose to be selling?
I asked the resident pecten expert, Ed about marybellae and we have 3 or 4.
Also when you have collected pectens for as long as Ed has, we are always
new species in our collection that look like they are the same but after a
while a paper or description is given, and we add new species.  But again
thanks for the help.
 
Ed and Barbara Haviland