David,
Consider the turrid Mitromorpha.

Allen Aigen  NYC
[log in to unmask]



On Wed, 30 Apr 2003 09:17:11 +0000 David Kirsh <[log in to unmask]>
writes:
> Dove-shell fans,
>
> I've got a 9mm gastropod from western Costa Rica, almost certainly
> a
> columbellid, that doesn't fit neatly with anything from Keen's book
> nor from
> Radwin's papers on western Atlantic columbellids.
>
> It's slender, almost perfectly biconic, with aperture less than half
> the
> length. No axial ribbing except faintly on the first teleoconch
> whorls
> (Zafrona?), but the periostracum is axially arranged. The primary
> sculpture
> is spiral grooving (Cosmioconcha?), even above the periphery. Outer
> lip has
> small denticles.
>
> Anyone game to look at some images?
>
> David Kirsh
> Durham, NC
>
>