Concerning Cypraea nucleus...

This won't make it any easier, but you might consider an
article from the Hawaiian Shell News of September of 1990
which shows a curious 'half-breed' of C. nucleus and C.
granulata that was collected in Hawaii.

It can be found in the Archive site of THE CAPTURED COWRY
at http://www.cowrys.org/archive/NSN369CY.HTM#B

makuabob (a.k.a. Bob Dayle)

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