I got one of those too (the fancy), and it doesn't look like that....either way nice picture and good luck...I think someone else had some pictures of nassarius like that..and reefkprz had a different name for them....I had these nassarius in my old tank, and although I don't know the scientific name for them, most LFS sell them as Nassarius.
Bummer. I thought these were the Fancy ones. and I was almost sure I had bought them here...though it is hard to keep track of everything. If not oh well. Thx for the pic compliment anyway buddy