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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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  • Genus: Semicassis

  • Semicassis labiata (Perry, 1811)
    =Cassidea labiata Perry, 1811, =Cassis achatina Lamarck, 1816, =Phalium (Xenogalea) labiatum (Perry, 1811), =Phalium labiatum (Perry, 1811), =Semicassis (Semicassis) labiata (Perry, 1811), =Semicassis labiata iheringi (Carcelles, 1953), =Semicassis labiata labiata (G. Perry, 1811), =Xenogalea collactea Finlay, 1928, =Xenogalea insperata Iredale, 1927
    Height 83mm, Width 52mm, Marine
    Northern part of North Island to Mahia. Victoria to Queensland and Norfolk Island AC
  • Semicassis pyrum (Lamarck, 1822)
    =Cassidea multisecta Finlay, 1924, =Cassidea stadialis Hedley, 1914, =Cassis nivea Brazier, 1872, =Cassis pyrum Lamarck, 1822, =Cassis striatus Hutton, 1873, =Cassis tumida Petterd, 1886, =Phalium pyrum (Lamarck, 1822), =Phalium stadiale (Hedley, 1914), =Semicassis (Semicassis) pyrum (Lamarck, 1822), =Xenogalea denda Cotton, 1945, =Xenogalea finlayi Iredale, 1927, =Xenogalea halli Cotton, 1954, =Xenogalea mawsoni Cotton, 1945, =Xenogalea powelli Finlay, 1928, =Xenogalea pyrum (Lamarck, 1822), =Xenogalea spectabilis Iredale, 1929, =Xenogalea stadialis (Hedley, 1914), =Xenogalea wilsoni Cotton, 1954, =Xenophalium (Xenogalea) abernethyi Dell, 1956, =Xenophalium (Xenogalea) matai Powell, 1952, =Xenophalium abernethyi Dell, 1956, =Xenophalium finlayi (Iredale, 1927), =Xenophalium hamiltoni Powell, 1928, =Xenophalium harrisonae Powell, 1928, =Xenophalium matai Powell, 1952, =Xenophalium pyrum (Lamarck, 1822), =Xenophalium pyrum pyrum (Lamarck, 1822), =Xenophalium wanganuiense Powell, 1928
    Height 85mm, Width 55mm, Helmet Shell, Marine
    North, South, Stewart and Chatham Islands ACFM
  • Semicassis royana (Iredale, 1914)
    =Cassidea royana Iredale, 1914, =Semicassis (Semicassis) royana (Iredale, 1914) accepted, alternate representation, =Xenophalium ericanum Powell, 1928, =Xenophalium hedleyi Iredale, 1927
    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)
    =Cassis sophia Brazier, 1872, =Semicassis (Semicassis) sophia (Brazier, 1872) accepted, alternate representation
    Height 90mm, Width 55mm, Marine
    Northern. Off Northland east coast. Also Queensland to New South Wales and Kermadec Islands KA
  • Semicassis thomsoni (Brazier, 1876)
    =Cassis (Casmaria) thomsoni Brazier, 1876, =Cassis thomsoni Brazier, 1876, =Semicassis (Semicassis) thomsoni (Brazier, 1876) accepted, alternate representation, =Xenogalea thomsoni (Brazier, 1876), =Xenogalea thomsoni palinodia Iredale, 1931
    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 A
Key to Geographical Ranges
NZ Map showing Geographical Ranges
The symbols K.A.C.F.M.An. are used to indicate the geographical range of the species. They have been adopted to give an approximation of the range of each species within New Zealand.
Kermadec Islands
Aupourian - Kaipara Harbour, north around North Cape, encompassing the Three Kings Islands and south to East Cape
Cookian - Lower North Island and the northern part of the South Island
Forsterian - Otago, Fiordland and Stewart Island
Moriorian - Chatham Islands, Pitt Island
Antipodean - Subantarctic Islands of New Zealand
Fw =
L =
N =
North Island
S =
South Island
E =
I =
R =
Sf =
Fo =