Dear Andrew,
"Your" Neritiliinae should be considered a separate family Neritiliidae
Schepman, 1908. At least the genera Neritilia and Pisulina belong to that
family. All species of these genera lack a central tooth in the radula. See
also the papers by Kano & Kase (2000 & 2001) and Bandel (2001) concerning
this matter.
Personally I agree with Golikov & Starabogatov, 1975 in giving Septariinae
family status: Septariidae Golikov & Starabogatov, 1975, however, for an
other opinion see Haynes (2001).
Best regards,

Henk K. Mienis
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----- Original Message -----
From: "Andrew Grebneff" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, December 26, 2002 7:27 AM
Subject: Re: Clithon sowerbianus.


> >Clithon is a genus in the Subfamily Theodoxinae of the family Neritidae.
> >This link has a key to the genus Clithon
> >http://www.aecos.com/CPIE/inv_04.html
>
> Tom Eichhorst is the list expert on Neritoidea. Opinion, Tom?
>
> To my knowledge the Recent Neritidae has the following subfamilies:
> Neritinae (includes Clithon)
> Neritiliinae
> Septariinae
> Smaragdiinae
>
> There will be numerous extinct subfamilies... the group has a VERY
> long fossil history. According to Klaus Bandel Neritoidea is the most
> primitive living gastropod superfamily.
> --
> Andrew Grebneff
> 165 Evans St, Dunedin 9001, New Zealand
> <[log in to unmask]>
> Seashell, Macintosh, VW/Toyota van nut
>
>