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Tonnidae - Phaliinae: Semicassis (Semicassis) pyrum (Lamarck, 1822) ('pear helmet')
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Synonym(s):
pyrum Lamarck, 1822
niveum Brazier, 1872
stadiale Hedley, 1914
spectabilis Iredale, 1929
denda Cotton, 1945
mawsoni Cotton, 1945
lalli Cotton, 1954.
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Figures a-c: 68 mm, Clifton Beach, Tas (S). Figures d-e: 46 mm, South Arm, Tas (S). Figures f-g: 37 mm, Maria Island, Tas (E). Figures h-i: 22 mm, Maria Island, Tas (E). |
Typical shell-length 70 mm. Shell variable in size, thickness and in extent to which shoulders bear nodules. Lives subtidally on sand.
Occurs in southeastern and southwestern Australia (NSW, TAS, VIC, SA and WA); also New Zealand and South Africa. In Tasmania this is a widespread species; most common in the N.
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Information and disclaimer:
The web-pages on this web-site are generated from an underlying database. These can be cited as Grove, S.J. (2011). A Guide to the Seashells and other Marine Molluscs of Tasmania web-site and database respectively.
Whilst great care is taken to accurately identify specimens featured on this web-site and to allocate all records to the most appropriate taxonomic names available, no guarantee is offered that all identifications are accurate, nor that the taxa to which they have been allocated are currently valid.
Commentaries on habitat, distribution and biology are also subject to change as new information comes to light. If you have any enquiries, or any comments that will help improve the content or appearance of these pages, then please follow the links from 'contact' on the left-hand panel.
Last build: Sun Oct 02 10:01:35 Tasmania Daylight Time 2011
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