Casmaria perryi (Iredale, 1912) Height 64mm, Width 32mm Marine SE Australia, Kermadec Islands and Northland east coast KA |
Semicassis labiata (Perry, 1811) Height 93mm, Width 58mm Marine Northern part of North Island to Mahia. Victoria to Queensland and Norfolk Island AC |
Semicassis pyrum (Lamarck, 1822) Height 118mm, Width 77mm Helmet Shell, Marine North, South, Stewart and Chatham Islands ACFM |
Semicassis royana (Iredale, 1914) Height 165mm, Width 88mm Marine Off Three Kings to Northland east coast, in craypots around 40 metres. Also off Kermadec Islands KA |
Semicassis sophia (Brazier, 1872) Height 98mm, Width 60mm 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 A |