Need help identifying this shell

[paul monfils]

OK, well I was thinking it looks like one of several Pleurodonte species that inhabit various Caribbean islands.  Something like this:

<a href="http://members.cox.net/paulcyp/Pisabella.jpg" target="_blank"><!-- m --><a class="postlink" href="http://members.cox.net/paulcyp/Pisabella.jpg">http://members.cox.net/paulcyp/Pisabella.jpg</a><!-- m --></a>

However, most Pleurodonte species do have well developed blunt teeth in the aperture.  In a few Pleurodonte species the teeth are only minimally developed though, so it may be one of these, though I can't guarantee that ID.  Also, not sure where you might get one, unless one of our frequent users might have one to offer.