Need help identifying this shell

[paul monfils]

One more request.  The image on the left is helpful, but the one on the right is not.  Very important in land shell identification is a view of the interior of the aperture, like this:

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

There are often structures in the aperture - teeth, ridges, etc. - that are useful for identifying families as well as individual species.  Lack of such structures is also helpful in ruling out some families and identifying others.