the last of the series

[paul monfils]

Funny how you look at something carefully several times and it doesn't ring any bells, then you take another look and it hits you.  The third shell is a species I'm quite familiar with, of which I have several specimens.  But mine are cleaned, a nice orange color, and I didn't initially recognize yours because of the dark picture and the heavy periostracum, but I lightened it in Photoshop, and I'm quite sure this is Latirus armatus.

The top two are both species of Turritellidae.  Turritella gemmata is my best guess for the first one.  The second one I can't place.  The 4th shell is driving me crazy because it looks so familiar, but so far no luck.