please help confirm identities of these shells

[shellhunk]

Guys please kindly identify these shells for me. I have an idea what they are but just not sure. 7 shells only.

Thank you again especially to Paul Monfils and David Touitou who have been very very helpful and accommodating as always.

shell 1 Brunneus?
<a href="http://www.badongo.com/pic/4015974" target="_blank"><!-- m --><a class="postlink" href="http://www.badongo.com/pic/4015974">http://www.badongo.com/pic/4015974</a><!-- m --></a>
shell 2 Casmaria ponderosa?/semicassis bisulcata?
<a href="http://www.badongo.com/pic/4015945" target="_blank"><!-- m --><a class="postlink" href="http://www.badongo.com/pic/4015945">http://www.badongo.com/pic/4015945</a><!-- m --></a>
shell 3 semicassis glabrata?
<a href="http://www.badongo.com/pic/4015953" target="_blank"><!-- m --><a class="postlink" href="http://www.badongo.com/pic/4015953">http://www.badongo.com/pic/4015953</a><!-- m --></a>
shell 4 Murex 1
<a href="http://www.badongo.com/pic/4015998" target="_blank"><!-- m --><a class="postlink" href="http://www.badongo.com/pic/4015998">http://www.badongo.com/pic/4015998</a><!-- m --></a>
shell 5 Murex 2
<a href="http://www.badongo.com/pic/4016003" target="_blank"><!-- m --><a class="postlink" href="http://www.badongo.com/pic/4016003">http://www.badongo.com/pic/4016003</a><!-- m --></a>
shell 6 small clam
<a href="http://www.badongo.com/pic/4016007" target="_blank"><!-- m --><a class="postlink" href="http://www.badongo.com/pic/4016007">http://www.badongo.com/pic/4016007</a><!-- m --></a>
shell 7 perotrochus hirasei?
<a href="http://www.badongo.com/pic/4016011" target="_blank"><!-- m --><a class="postlink" href="http://www.badongo.com/pic/4016011">http://www.badongo.com/pic/4016011</a><!-- m --></a>