Just seen Steve and Xander's post and pulled this from my June records. I remember thinking it didn't look quite right for Mother of Pearl, it seems to be smaller, less pearly but couldn't firmly place it as something else.
Here is it is
Also I think this one is a Clay
Mark Griffiths, Garsington, Oxford
Mark
ReplyDeleteI agree with both your identifications. The shape of lancealis is quite distinctive.