Cistula has a painful taxonomic history, having been proposed in a rejected
work but picked up by several later workers, notably Swainson and Gray. All
of these uses were believed to be junior synonyms of Cistula "Say" Gray,
1825, a genus of turtles. Gray actually introduced it three times. However,
Gray goofed. Say's name was actually spelled Cistuda, not Cistula, and the
misspelling does not enter into the competition. The concept of Cistula has
changed over time, from "Annularia" to, mysteriously, just about any high
spired annularine or rhytidopomine. Most species subsequently added to
Cistula are actually in Parachondria. The original species in the genus
were members of Choanopoma.

Cistulops is a monotypic genus for C. raveni (Crosse, 1872) from Curacao.
Cistulops (a chondropomine) has nothing to do with Cistula (an annularine,
as a synonym of the Jamaican Choanopoma or "Annularia.") In my
someday-to-be-published catalog of the Annulariidae (= Chondropomatidae), I
do not recognize any species as Cistula.


>Dear Conchlers,
>
>should be Cistula and Cistulops the same genera and
>do they belong to the same family, to
>Chondropomatidae.
>with best shelling greetings
>Helmut
>
>=====
>Helmut Nisters
>Franz-Fischer-Str. 46
>A-6020 Innsbruck / Austria
>phone: 0043 512 573214
>e-mail: [log in to unmask]
>web: www.netwing.at/nisters
>
>__________________________________________________________________
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>Gesendet von Yahoo! Mail - http://mail.yahoo.de

G. Thomas Watters, PhD
Curator of Molluscs
Department of Evolution, Ecology and Organismal Biology
Museum of Biological Diversity
The Ohio State University
1315 Kinnear Road
Columbus, OH 43212
v: 614-292-6170
f: 614-292-7774
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