Go to this site. 
 
Tivela stultorem shell series - pismo clam
 
For other images, Google images for "Pismo clam".  Isn't amazing that Google is also a verb!  God bless us.
 


From: Ingrid Thomas [mailto:[log in to unmask]]
Sent: Friday, September 09, 2005 5:08 AM
To: [log in to unmask]
Subject: Two queries

Dear Conch-L
 
1.  Please can somebody tell me what is a Pismo Clam?  My compendia do not seem to be able to help.  My reference comes from an anthropological book describing N.American Indian use of  "Pismo clam shell beads".   I need to be able to identify it in a book I am writing.
 
 
2.  I have been invited to the British Virgin Islands next April.  Can anybody tell me if there are any restrictions on the collection of beached shells there?
 
Many thanks.
 
Sincerely
Ingrid Thomas