OK.  To see pictures of the shell I've been trying to ID (as possibly U. imbecillis)go to http://www.oglethorpe.edu/faculty/~j_cramer/ and click on the title "shells."  Valves are the same size although they may not appear so in all shots because of camera angle. You can see how big it is from the 6" ruler.  Reactions solicited.

----------------------------------------------------------------------
[log in to unmask] - a forum for informal discussions on molluscs
To leave this list, click on the following web link:
http://listserv.uga.edu/cgi-bin/wa?SUBED1=conch-l&A=1
Type your email address and name in the appropriate box and
click leave the list.
----------------------------------------------------------------------