Excellent, thanks much for the info.
Youse guys really know your snails!

--
Paul Furman
http://www.edgehill.net
san francisco native plants


Phil Liff-Grieff wrote:

> Paul,
>
> Your snails are either Oxychilus draparnaudi (or a related
> Zonitid) or immature Haplotremes (I suspect otherwise as
> per Tim's comments; also all of the Haplotremes I'm
> familiar with in the Westerrn US have lighter colored
> bodies).
>
> There is no way that they can be Helminthoglyptas, having
> neither the shape nor the coloration found in any species
> in that genus.  The many Helminthoglypta species found
> anywhere near your area (H. nickliniana, arrosa,
> californiensis, stiversiana, exarata, etc.) bear
> absolutely no resemblence to the guys you've pictured.
> For a look at one of these California natives, check out
> http://ventura.fws.gov/images/snail%20photo.jpg.  Your Bay
> area Helminthos are a little different from this one but
> you get the idea.
>
> I'm sure that your native plant experts know their plants
> very well...................
>
> All the best,
>
> Phil Liff-Grieff
>
>> > > ...based on the photos
>> > > and the size given for these critters, it is likely
>> that you've got Oxychilus
>> > > draparnaldi, a glass snail that is found throughout
>> Europe and many parts of the
>> > > US.  This species was probably introduced into the
>> US in the mi
>