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Marioniopsis sp. A  Genus: Odhner, 1934

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Bill Rudman writes: "Marioniopsis sp. A is the one I have previously called Tritoniid sp. 3. I think Odhner would have put it in a genus Marionopsis rather than Marionia but the first task is to sort out the species names of these tropical tritoniids." Marioniopsis sp. A differs from Marioniopsis sp. B by not having ae white band in the centre of the mantle. Marioniopsis sp. C could be a colour variant of Marioniopsis sp. A, but this has clear dark blue ornaments, in Marioniopsis sp. C this is indistinct. There are many tritoniids with a similar colour pattern, even the bright blue spots are not distinctive - or there is one species with many colour variants.
More informations on Marioniopsis sp. A are at Bill Rudman's Sea-Slug Forum!