Date: Mon, 12 Jul 2004 05:48:03 -0400
Reply-To: Conchologists of America List <CONCH-L@LISTSERV.UGA.EDU>
Sender: Conchologists of America List <CONCH-L@LISTSERV.UGA.EDU>
From: "Harry G. Lee" <shells@HGLEE.COM>
Subject: Re: New names
It looks like Roth & Sadeghian (2003) read the directions and reached the
same conclusions. The nomenclatorial issue appears resolved; what remains
is a taxonomic one, and for that I think anatomic (love-darts, etc)
insights are necessary.
At 08:52 PM 7/11/2004, you wrote:
>Dear Harry, et al.,
>This is an interesting discussion relating to the correct generic (or
>subgeneric) name to use for what was (or is) known as Helix aspersa.
>Roth & Sadeghian (2003; Checklist of the land snails and slugs of
>California. Santa Barbara Museum of Natural History, Contributions in
>Science :60) have come to the same conclusion on whether Cornu is
>available as a genus or subgenus name. I quote:
>"Recently published assignments of this ... species to either Cantareus
>Risso, 1826, or Cryptomphalus Charpentier, 1837, at either generic or
>subgeneric levels, are untenable, because Cornu Born, 1778, is an
>available genus-group name. The type species of Cornu is Cornu copiae
>Born, 1778, a nominal taxon based on a scalariform specimen of Helix
>aspersa. Cornu is not based on a tetralogical specimen named as such and
>in distinction from normal specimens of the same species [his italics]
>(IZCN Art. 1.3.2) and is therefore available. It is also the earliest
>genus-group name based on H. aspersa and is therefore the choice if one
>wishes to distinguish H. aspersa generically or subgenerically from a
>group of Helix Linnaeus, 1758 ...."
>Now, whether you want to treat Cornu as a genus or subgenus really doesn't
>much matter, but for what it is worth, Roth & Sadeghian list the species
>as Helix (Cornu) aspersa; i.e., treat Cornu as a subgenus of Helix. (But,
>I use Cornu aspersum).
>Harry G. Lee wrote:
>>Dear Gijs, Henk, et al.,
>>My Dad always told me: "When in doubt, read the directions." I have Born
>>and the Code in front of me.
>>Born (1778) proposed the new generic name Cornu (type C. copiae Born,
>>1778 by monotypy) in the belief that it was a normal shell of a new
>>species requiring a new genus; both nomina were validly proposed under
>>The description and companion plate depict what I (and others,it seems)
>>consider a teratologic solute ("scalariform") specimen of Helix aspersa
>>Müller, 1774. The shell bears a considerable resemblance to the one on
>>the large plate on p. 193 of the Compendium of Landshells. I concur with
>>Dick Petit's interpretation of ICZN 1.3.2, which reads: " (Exclusions)
>>... for teratologic specimens as such" (my boldface).
>>Now, assuming that Helix aspersa Müller, 1774 needs to be classified in a
>>generic unit other than its original placement, and assuming no author
>>applied Cornu to another genus of animals between 1758 and 1778 adhering
>>to the provisions of the Code, the name Cornu is a available to
>>accommodate it, and this generic name is an objective senior synonym of
>>Cantareus Risso, 1826 (also based on the Müller species), an invalid name
>>- barring the unlikely situation that Cornu has a senior homonym or synonym.
Harry G. Lee
1801 Barrs St.
Jacksonville, FL 32204
Visit the Jacksonville Shell Club Home Page at:
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