Species List for Genus: Semicassis
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Mollusca (Phylum) > Gastropoda (Class) > Caenogastropoda (Subclass) > Littorinimorpha (Order) > Tonnoidea (Superfamily) >
Cassidae (Family) >
Phaliinae (Subfamily) >
Semicassis (Genus)

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Semicassis labiata (Perry, 1811)
Height 83mm, Width 52mm, Marine
Northern part of North Island to Mahia. Victoria to Queensland and Norfolk Island
AC Semicassis pyrum (Lamarck, 1822)
Height 85mm, Width 55mm, Helmet Shell, Marine
North, South, Stewart and Chatham Islands
ACFM Semicassis royana (Iredale, 1914)
Height 150mm, Width 80mm, Marine
Off Three Kings to Northland east coast, in craypots around 40 metres. Also off Kermadec Islands
KA Semicassis sophia (Brazier, 1872)
Height 90mm, Width 55mm, Marine
Northern. Off Northland east coast. Also Queensland to New South Wales and Kermadec Islands
KA Semicassis thomsoni (Brazier, 1876)
Height 80mm, Width 55mm, Marine, Distinguished by the deeply indented margin of the columellar shield
Off east coast Northland to Bay of Plenty, New Zealand. Also Australia
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