03-03-2012, 11:30 PM
03-04-2012, 03:07 AM
Hello Pierre!
I'd say the first and the third are Mauritia arabica (I have some in similar condition from Papua New Guinea). If you cover the top of a Mauritia arabica in acid it is purple (I was given one, I haven't done this myself); you also see this purple covering in other cowries (annulus, if I am not mistaken).
With regard to the Bulla stage, I'm not so sure, I'd suggest Chelycypraea testudinaria; I don't think it is tigris this time. But, as always, I am not sure of the location of C. testudinaria so somebody will probably correct me.
I hope this helps,
Best wishes,
Emma.
I'd say the first and the third are Mauritia arabica (I have some in similar condition from Papua New Guinea). If you cover the top of a Mauritia arabica in acid it is purple (I was given one, I haven't done this myself); you also see this purple covering in other cowries (annulus, if I am not mistaken).
With regard to the Bulla stage, I'm not so sure, I'd suggest Chelycypraea testudinaria; I don't think it is tigris this time. But, as always, I am not sure of the location of C. testudinaria so somebody will probably correct me.
I hope this helps,
Best wishes,
Emma.
03-04-2012, 03:23 AM
The first one may be Mauritia arabica immanis. I have a similar beach-collected one from Australia. I say this because the immanis form is more "compact" in my opinion than the normal arabica arabica.
03-06-2012, 04:47 AM
Thanks a lot Emma,
I am ok with testidunaria as it is found in the area.
Pierre
I am ok with testidunaria as it is found in the area.
Pierre
03-07-2012, 02:18 AM
Emma, arabica immanis is endemic to the Western Indian Ocean, they are not found elsewhere. Also I do believe it is a species in its own right now..
03-08-2012, 02:45 AM
Thanks Dave, I'll post a picture. I felt sure mine was an arabica imanis imanis by the shape and the specimen is definetely from Australia.
Emma.
Emma.
03-08-2012, 10:55 AM
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03-12-2012, 07:30 PM
Thanks for the link Dave, but I'm affraid that mine too is a "bad cowrie", a rather worn beach specimen with only a remnant of pattern. So, it's probably better I post a photo on the forum.
Best wishes,
Emma.
Best wishes,
Emma.