What? There is no Cypraea norvegica?
I guess I'll go put these imposters back in the fjord!
Thanks, Erick and Tom.
Yours,
Andrew Vik
> [Original Message]
> From: Thomas Eichhorst <[log in to unmask]>
> To: <[log in to unmask]>
> Date: 6/2/2008 11:39:23 AM
> Subject: Re: [CONCH-L] Cypraea in Norway; Theodoxus in Denmark
>
> Hey Andrew,
>
> Erik has it correctly, only Theodoxus fluviatilis (Linnaeus, 1758) is
known
> to occur that far north. It is widespread throughout Europe from the
British
> Isles and Spain to the Caucasus and the Black Sea, and from the Baltic Sea
> to Italy. It is reported from Turkey, but these findings are probably the
> very similar Theodoxus heldreichi (von Martens, 1879) or Theodoxus
altenai
> Schutt, 1965, both from that area. As for its northern limits, it has
been
> found in Denmark, as well as the southern portions of Sweden and even
> Finland. It is found in marine, brackish, and freshwater; and was in fact
> given three separate names by Linnaeus depending upon its habitat: Nerita
> fluviatilis in the rivers of Europe (Latin fluviatilis = found in rivers),
> Nerita lacustris Linnaeus, 1758 in lakes (Latin lacus = tank, pool,
> reservoir, or lake), and Nerita littoralis (Linnaeus, 1767) along the
> seashore (Latin littoralis = of the shore). Unlike some other nerites
that
> exist in both salt and "fresh" water, Theodoxus fluviatilis will not
survive
> if moved from one extreme to the other. An amazing little snail.
>
> Tom Eichhorst
>
> -----Original Message-----
> From: Conchologists List [mailto:[log in to unmask]]On Behalf Of
> Kay Lavalier
> Sent: Sunday, June 01, 2008 6:24 AM
> To: [log in to unmask]
> Subject: Re: [CONCH-L] Cypraea in Norway; Theodoxus in Denmark
>
>
> Thanks, Tom
>
> All of the specimens, plain yellow or banded,
>
> have white columella and lip, so I will stick
>
> with C. hortensis for I.D.
>
> I have another question that is right up
>
> your alley: what are the species candidates
>
> for Theodoxus found in Denmark? I found
>
> two small black nerites, oblong in profile,
>
> with apparently a shelly white operc.,
>
> no noticeable surface sculpture.
>
> I will have to "de-mummify" them
>
> to get a better look at the opercs.
>
> I found them in Roskilde, not far
>
> from the Vikingeskibsmuseet
>
> (Viking Ship Museum).
>
> I had thought that this was on a long,
>
> shallow bay, but looking at the map now,
>
> it was probably a brackish lake/lagoon.
>
> Yours, Andrew Vik
>
>
> > [Original Message]
> > From: Thomas Eichhorst <[log in to unmask]>
> > To: <[log in to unmask]>
> > Date: 5/31/2008 2:35:32 PM
> > Subject: Re: [CONCH-L] Cypraea in Norway
> >
> > Hey Andrew,
> >
> > Cepaea nemoralis can be found in some pretty northerly climes, and it
can
> be
> > mistaken for C. hortensis. I think the easiest "tell" is the
> light-colored
> > columella of C. hortensis and the brown lip of C. nemoralis. I am sure
> some
> > of our land snail experts can easily help out if they can see an image
of
> > the shell in question.
> >
> > Tom Eichhorst
> >
>
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