Hello, Conch-Lers! I have been working on identifying the bivalves in the collection the club bought. I have run accross a shell which is identical to the picture in Eisenberg (I know this is not one of the best books) of "Protothaca grata" Say. There is also another shell that I am sure is the same - outer clor and pattern different, but everything else the same. The trouble is that I can't find this namee in any of my other books. Is it valid, or is it a synonym, and if so, of what? Thanks, Linda