First, Xerocrasa cretica (not Trochoidea anymore) is a rather restricted
invasive (Mediterranean only) and does show so much polymorphism in the
outside range (totally white or few faint bands).

Second, rather correct way to put it was saying the pattern is totally of
pisana. Besides no Helicellinae (-dae) (Hygromiidae is the correct term
here) is globular in shape.

Candidula observation is interesting. But note that even coastal, it is not
a Mediterranean species but an Atlantic one. Indeed, i doubt if they can
survive summers Theba do and if they get such long dry seasons. Like
Cernuella and Cochlicellas Theba is a dune dweller on the other hand...

Don't have an idea? Then ask Mediterranean snailers :)

Ümit
Mostly slugger

----- Original Message -----
From: "Andrew Grebneff" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, August 03, 2007 2:48 AM
Subject: Re: Mystery Greek Terrestrial


> >Most probably the species is Theba pisana. The colourpattern of
> >Trochoidea cretica (belongs to the Hygromiidae!) is different.
> >Pisana is widespread in the whole mediterrenean area
>
> How DARE you people be right??
>
> As I said, these beasties are difficult to identify.
>
> According to Vaught and Abbott 1989 Trochoidea is in Helicellidae.
>
> It might be of interest to some to hear that Candidula intersecta is
> alive & well around limestone cliffs in New Zealand. They can be
> extremely common after rain, even crawling across the bottoms of very
> small pools, but when it's dry there will be not a sign of any living
> specimen.
> --
> Andrew Grebneff
> Dunedin
> New Zealand
> Fossil preparator
> <[log in to unmask]>
> Seashell, Macintosh, VW/Toyota van nut
>
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