And live in salt, brackish and freshwater and even underground in caves.
(If you want to find a new species this is quite a chance. Don't get lost
though :-).)
By the way Drap. stands probably for Draparnaud, a french malacologist.

Erick

On Tuesday 29 May 2001 05:38 am, you wrote:
> I am not familiar with the species Belgrandia gibba, but Vaught places
> Belgrandia in Hydrobiidae, a family of tiny, non-descript shells that
> only a specialist could love.  The family has an incredible number of
> sub-families and genera.
>
> Paul M.