Hawaiian cowries of the Recent age...
An extreme shape of Cypraea teres
TER420 (above) is the most globose ("fattest," "plumpest,"... whatever!) Cypraea teres Gmelin, 1791 of nearly 1000 of this species which this collector/writer took from the waters around the island of O'ahu. Shells like that above have usually been named Cypraea rashleighana Melvill, 1888 however, new research has shown this is merely an 'extreme' forma of C. teres. To read more about how this extreme shape may have come about, read an article about how the shape of Hawaiian C. teres changes.. (To learn about the “Q” factor, see the main page of the Visual Database of Cypraea teres-related shells.)
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