Thank you for your reply nelsonabc.
I compared No2. with M. definitsus. I could see only one photo from internet. But their grooves on the shell and anterolateral teeth look very similar.
I want to compare No.3 with M. erato, but it's really hard to get any information of them from internet. If possible, could you provide me any info about M. erato?
Here's a bigger photo of No.3. It has taken by iPhone and picture is not good enough though.
Appreciate your help!
[ Last edited by TAQ at 2016-11-6 15:28 ]