Hi David,
 
Thanks for responding. I'm unclear as to what you mean by "innerside of
mouth". Are you referring to the lip (labial) itself, to the inside of the
aperture, or the inner lip (parietal wall)? Also, what does the posterior
siphonal canal look like in V. tyleri? Is it long as in cancellata, short and
recurved as in crispata, or different from both?
 
Thanks,
Ken Zentzis
Wichita, Kansas
 
David Monsecour wrote:
>
> Dear Ken,
>
> There is a third species in this genus: V. tyleri. If those four shells
> have a smooth innerside of the mouth, you will be a very lucky boy (I have
> been looking for tyleri for more than 3 years now, and never managed to
> get hold of one, although I have been through hundreds of crispata and
> cancellata to check whether a single tyleri would have slipped in).
> Very interested to see one of these four.
>
> I hope this helps you out,
>
> David