Calliostoma tigris
| Calliostoma tigris | |
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| A shell of Calliostoma tigris | |
| Scientific classification | |
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| (unranked): |
clade Vetigastropoda
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| Species: |
C. tigris
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| Binomial name | |
| Calliostoma tigris tigris (Gmelin, 1791)
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| Synonyms[1] | |
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Calliostoma tigris, common name the tiger maurea, is a large species of sea snail, a marine gastropod mollusc in the family Calliostomatidae, the calliostoma top snails.[1]
Some authors place this taxon in the subgenus Calliostoma (Maurea).
Description
The height of the shell varies between 50 mm and 100 mm. This makes it one of the largest Calliostoma species. The large, imperforate, solid but rather thin shell has a conical shape. It is light yellowish, longitudinally painted with numerous rather narrow irregular chestnut-reddish stripes. The surface of the embryonic whorls is smooth, the others encircled by numerous delicate, finely beaded lirulae, which on the penultimate whorl number about 16-20. On the upper surface of the body whorl there are 18-25 lirulae. The spire is elevated, its lateral outlines concave above. The sutures are a little impressed. The shell contains 10 - 12 whorls, those of the spire flattened, the last convex, rounded at the periphery. The granulation is fine and even, not obsolete on the outer part of the base. The aperture is rhomboidal, iridescent within. The arcuate columella is pearly, bluntly tuberculate at base.[2]
Distribution
This marine species is endemic to New Zealand.
References
- ↑ 1.0 1.1 WoRMS (2010). Calliostoma tigris (Gmelin, 1791). In: Bouchet, P.; Gofas, S.; Rosenberg, G. (2010) World Marine Mollusca database. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=467270 on15 December 2012
- ↑ Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia
External links
Further reading
- Powell A. W. B., New Zealand Mollusca, William Collins Publishers Ltd, Auckland, New Zealand 1979 ISBN 0-00-216906-1
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