I sympathize with Harry's struggle... That shell has the colors of Thala
violacea, but with a "columbelloid" aperture ...
José H. Leal, Ph.D., Science Director & Curator
The Bailey-Matthews National Shell Museum
Editor, The Nautilus
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From: Conchologists List [mailto:[log in to unmask]] On Behalf Of
Harry Lee
Sent: Friday, July 03, 2015 8:36 AM
To: [log in to unmask]
Subject: Re: [CONCH-L] A beautiful species
Dear Olivier,
Paul C. indicated the familial placement of Thala yesterday. He and Gary
Rosenberg have experience with this mitriform group and may be able to
identify your Reunion shell to the species level.
I think I see columella plicae on your shell, but I can't fully convince
myself. It's looking a bit more like homoplasy (convergence) than larval
lifestyle changeout.
Harry
At 12:59 AM 7/3/2015, Olivier CARO wrote:
Yes Harry, I agree it's not a Raphitomid.
I discover the genus Thala in Costellariidae (Paul Callomon was right when
he proposed first to check this family). So for this white shell, maybe it
's a juvenile of Thala cernica (Sowerby II, 1874). And the purple shells
belong to Kermia pumila, OK.
Olivier
Le 03/07/2015 00:05, Harry Lee a écrit :
Dear Olivier,
I think it's possible that your Reunion shell is not a Kermia or even a
Raphitomid.
Are we dealing with homoplasy (convergent teleoconch morphology, e.g., <
https://listserv.uga.edu/cgi-bin/wa?A2=ind1401A&L=CONCH-L&P=R7028&X=93EEC005
C692EDB882&Y=shells%40hglee.com
<https://listserv.uga.edu/cgi-bin/wa?A2=ind1401A&L=CONCH-L&P=R7028&X=93EEC00
5C692EDB882&Y=shells%40hglee.com> >) or didymy (lecithotrophy/planktotrophy
conversion, e.g., <
https://listserv.uga.edu/cgi-bin/wa?A2=ind0310B&L=CONCH-L&P=R4488&X=93EEC005
C692EDB882&Y=shells%40hglee.com
<https://listserv.uga.edu/cgi-bin/wa?A2=ind0310B&L=CONCH-L&P=R4488&X=93EEC00
5C692EDB882&Y=shells%40hglee.com> >) here?
A third alternative: I'm all wet!
Harry
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