Williamia!!!!! You are absolutely right.

The pleasant point is: I received once a "W. gussonii" that was a
Lepetid. And today, I receive a "Iothia fulva" (from Sicily, pretty
range extension) that is a Williamia.
I love these crossed jokes.

Thank you, gentle fellows! This mystery did not survive a long time.
I'll try to do better next time.

Olivier

×”× ×§ ×ž×™× ×™×¡ a écrit :
> I agree with Paolo. It is without any doubt Williamia gussonii (Costa,
> 1829), belonging to the Siphonariidae.
> This genus is also represented by a different species in the Caribbean
> and
> several others in the Indo-Pacific.

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