I think the bigger may be C. repandum Monterosato, as far as you really
think of it as a "bona species" A full revision of the Mediterranean
Cerithium is however badly needed.
Enzo
> Dear friends, dear Enzo, I have a problem
>
> These two cerithiids come from Kerkennah TN, and are labelled lividulum.
> 21-27mm.
> I suspect the larger belongs to an other species, but I can't imagine
> which one.
>
> I posted a picture here:
> http://www.idscaro.net/sci/04_med/pictures/fam3/lividulum_vs_what.jpg
>
> Thanks for any help
>
> Olivier CARO
>
>

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