Perhaps a Planaxis species?

> ----------
> From:         David Kirsh
> Reply To:     Conchologists of America List
> Sent:         26, April 2003 9:03 AM
> To:   [log in to unmask]
> Subject:      W/E mystery gastropod
>
> People,
>
> I found the rocks at Punta Pelada on Costa Rica's Pacific coast were
> covered
> with small live Littorina-like snails at the upper reaches of the
> intertidal
> area, beyond most of the Nerites.
>
> Keen has something from Puntarenas, C.R. she called Lacuna succinea Mörch,
> but was uncertain about its true placement. The size of my specimen is
> about
> right: 5 - 6 mm. But she says they are on seaweed rather than on rocks and
> there's a chink-like umbilicus. Mine was clearly exposed on rocks and has
> an
> obvious umbilicus. Surface is eroded and gray.
>
> Anyone familiar with this ubiquitous gastropod? A Google search turns up
> nothing. Maybe the name has been revised.
>
> David Kirsh
> Durham, NC
>
>