Oh, the perils of buying old collections, especially since relatives often do not understand the concept of "correct data." I really smell a rat with this shell. I have a yellow pecten that seems to fit the description of Chlamys rubida, but it was labeelled Chlamys "patraiae (Doella Jurado, 1918)" Also, the locality is "Maldonado, Uruguay." COMMENTS? Cheers, Linda