Hi Dr Klicpera,

this is collected from the reef areas of east coast of India from fishing net discards. Inquiry with fishermen revealed the nets were operated close to the reefs. shell diameter is 87 mm.

regards

Deepak

I think you're correct. If you use Facebook, there is a group called ID Please that might be helpful for this sort of thing.

Best,

Kevin

Thanks for the clarity Dr Klicpera and thanks for the help Dr Kocot

Best regards

Deepak

I do agree that this appears to be Isognomon ephippium.

Thank you Dr Hewitt

regards

Deepak

Isognomon alatus is a Caribbean specie.

I also agree it is an Isognomon and ephippium seems likely.