Dear Larry (Watrous),

Leslie Hubricht opined that Columella tridentata Leonard, 1946 was a "rare
aberration" of Gastrocopta ruidosensis (Cockerell, 1899) in:

Hubricht, L., 1972.  Gastrocopta armifera (Say). Nautilus 85(3): 73-78. Jan.

In the same paper he also synonymized G. proarmifera Leonard, 1946 with G. r.

As of 1985, none of these synonymous taxa had been found above Pleistocene
strata. (Hubricht, L., 1985,  The distributions of the native land mollusks
of the Eastern United States. Fieldiana 24(1359): pp. 1-191 + viii. June 28).

If these works aren't available to you, I'd be happy to send photocopies
(of the paper and the passage in the monograph) if you wish.

Harry


At 05:39 PM 4/25/00 -0500, you wrote:
>Is anyone familiar with the current status of Gastrocopta tridentata
>(Leonard)?
>
>This species was described in 1946 from a single specimen from Russell Co.,
>Kansas (lower Pleistocene).  It was originally placed in the genus
>Columella, but moved to Gastrocopta by Pilsbry in 1948.  Pilsbry suggested
>this might be a gigantic form of G. armifera.
>
>This name is not included in the American Fisheries Society listing of
>common names for Mollusks.  Is this because it is only known from fossil
>material, or has it been synonymized with G. armifera (or something else)?
>
>We think we found a couple examples of this interesting land snail from SW
>Missouri.  Any insights on it's current status would be helpful.
>
>Larry W.
Harry G. Lee
Suite 500
1801 Barrs St.
Jacksonville, FL 32204
USA   904-384-6419
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Visit the Jacksonville Shell Club Home Page at:
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