These are some cute Buccinids from Bunker Bay, Australia.  The divisions on the ruler ar metric, so they are about 20mm.  email link to Mr. Bankston.

Another Bunker Bay Buccinid to Bark to Mr. Bankston  about.

Macroschisma sp.
15mm, collected Coconut Wells Beach, N. of Broome, Western Australia.  Close to M. munita
Iredale, 1940.

If anyone can ID this, they can contact me at [email protected] (linked)