When numbering shells, do all the specimens of a particular species recieve the same number?  Or do they all get differnt numbers?  In his excellent reply to my earlier post (thanks so much!), Peter Egerton mentioned "lots", I didn't really understand how that worked.  Is it all the specimens of a species in my collection, or all the specimens of any species I collect at any given time?  I do remember this affected the numbering, which is why I bring it up, perhaps if he or someone else could expand on that, I'd really appreciate it!

~Stephen~