On Tue, 30 Sep 2003 11:11:16 +1200, Andrew Grebneff
<[log in to unmask]> wrote:

>The Cepaea twins are native to North America, according to John
>Maunder (Newfoundland Museum) and Ron Noseworthy. Not all of
>Newfoundland was glaciated during the Pleistocene/Holocene, and the
>colonies there survived.


Not every Cepaea colony in the U.S. is native! Only the ones in Newfounland
& perhaps on some islands off Maine(?) may be native. Any Cepaea colonies
further to the south, for example, the known colonies in Virginia, were
definitely introduced. In fact, there was one deliberately introduced
colony of Cepaea in Maryland, although fortunately it appearently got
extinct.

Aydin
home.earthlink.net/~aydinslibrary