Turbo cidaris, common name the crown turban, is a species of sea snail, marine gastropod mollusk in the family Turbinidae.[1]
| Turbo cidaris | |
|---|---|
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Vetigastropoda |
| Order: | Trochida |
| Superfamily: | Trochoidea |
| Family: | Turbinidae |
| Genus: | Turbo |
| Species: | T. cidaris
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| Binomial name | |
| Turbo cidaris Gmelin, 1791
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| Synonyms[1] | |
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Some authors place the name in the subgenus Turbo (Sarmaticus)
- Subspecies
- Turbo cidaris cidaris Gmelin, 1791
- Turbo cidaris natalensis (Krauss, 1848) (synonyms: Turbo natalensis Krauss, 1848; Turbo natalensis var. unicolor Turton, 1932)
Description
editThe length of the shell varies between 25 mm and 60 mm. The imperforate, smooth and polished shell has a depressed, heliciform shape. Its color pattern is reddish, brown or yellow, usually flammulated above, variously marked below, with white. The spire is short and contains 5–6 whorls. The upper ones are bicarinate, the last often considerably descending, and rounded. The aperture is circular, oblique, and white within, rounded below. The wide columella is callous, and is excavated at the umbilical region.
The operculum is slightly concave inside, with six whorls and a subcentral apex. The outer surface is sharply granulate, white, convex, spiral, with a central pit.[2]
Distribution
editThis species occurs in the Indian Ocean off Mozambique and South Africa. It has also been found off Angola and Indonesia.
References
edit- ^ a b Turbo cidaris Gmelin, 1791. Retrieved through: World Register of Marine Species on 28 September 2012.
- ^ G.W. Tryon (1888), Manual of Conchology X; Academy of Natural Sciences, Philadelphia (described as Turbo (Ocana) cidaris)
- Kilburn, R.N. (1974) Taxonomic notes on South African marine Mollusca (3): Gastropoda: Prosobranchia, with descriptions of new taxa of Naticidae, Fasciolariidae, Magilidae, Volutomitridae and Turridae. Annals of the Natal Museum, 22, 187–220.
- Steyn, D.G. & Lussi, M. (1998) Marine Shells of South Africa. An Illustrated Collector’s Guide to Beached Shells. Ekogilde Publishers, Hartebeespoort, South Africa, ii + 264 pp. page(s): 26
- Branch, G.M. et al. (2002). Two Oceans. 5th impression. David Philip, Cate Town & Johannesburg
- Alf A. & Kreipl K. (2003). A Conchological Iconography: The Family Turbinidae, Subfamily Turbininae, Genus Turbo. Conchbooks, Hackenheim Germany.
- Williams, S.T. (2007). Origins and diversification of Indo-West Pacific marine fauna: evolutionary history and biogeography of turban shells (Gastropoda, Turbinidae). Biological Journal of the Linnean Society, 2007, 92, 573–592.
External links
edit
- "Turbo (Sarmaticus) cidaris cidaris". Gastropods.com. Retrieved 16 January 2019.