Species of gastropod
| Spotted tun |
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Scientific classification |
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Family: | Tonnidae |
| Genus: | Tonna |
| Species: | T. dolium |
| Binomial name |
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Tonna dolium
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| Synonyms |
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- Buccinum doliumLinnaeus, 1758 (original combination)
- Cadium dolium(Linnaeus, 1758) (Recombined in synonymous genus)
- Cadus cassisRöding, 1798
- Cadus doliumRöding, 1798 (Recombined in synonymous genus)
- Dolium (Dolium) maculatum(Lamarck, 1822) (Recombination of synonym)
- Dolium cassis(Röding, 1798) (Recombination of synonym)
- Dolium costatum var.maculatumLamarck, 1822
- Dolium maculatumLamarck, 1822
- Dolium maculatumSchröter in Martini, 1788 (Synonym - Unavailable under Direction 1 as index to non-binomial work)
- Tonna (Tonna) maculata(Lamarck, 1822) (Recombination of synonym)
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Tonna dolium, common name thespotted tun, is aspecies of largesea snail or tun snail, amarinegastropodmollusc in thefamilyTonnidae, the tun shells.[1]
The size of the shell varies between 100 mm and 181 mm.
The thin shell is ovate-globose and ventricose. Thespire is generally short. It is composed of sixwhorls, slightly flattened above. Thebody whorl is large and very convex. All these whorls are encircled by wide and distant ribs, slightly convex, numbering ten upon the body whorl. Others, more narrow, are placed alternately within the furrows, which are wide and very slightly striated. The surface of this shell is of a white color, slightly grayish, and sometimes rose-colored. It is ornamented upon the ribs, with alternate white and red spots, often also orange, which, disposed thus in regular series, present a beautiful appearance. Theaperture is very large, colored within of a chestnut tint. The outerlip is thin, notched, canaliculated within, and its edge is white and undulated. The inner lip is only slightly perceptible towards the base, where it forms a part of the umbilicus, which is hardly developed. Thecolumella is twisted spirally, and furnished externally, even to the emargination of the base, with longitudinal ribs.
Its ribs, wide and distant, its furrows equally wide, render it easily distinguishable.[2]
This marine species occurs in the Indo-West Pacific offTanzania, theMascarene Basin and off thePhilippines.
- Linnaeus, C. 1758.Systemae naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differetiis, synonymis, locis.v. Holmiae : Laurentii Salvii 824 pp.
- Martini, F.H.W. 1777.Neues systematisches Conchylien-Cabinet, fortgesetzt durch Johann Heironymus Chemnitz. Nürnberg : G. N. Raspe Vol. 3 vi + 1-434, pls 66-121.
- Röding, P.F. 1798.Museum Boltenianum sive Catalogus cimeliorum e tribus regnis naturae quae olim collegerat Joa. Hamburg : Trappii 199 pp.
- Lamarck, J.B.P.A. de M. 1822.Histoire naturelle des Animaux sans Vertèbres. Paris : J.B. Lamarck Vol. 7 711 pp.
- Springsteen, F.J. & Leobrera, F.M. 1986.Shells of the Philippines. Manila : Carfel Seashell Museum 377 pp., 100 pls.
- Drivas, J.; Jay, M. (1987).Coquillages de La Réunion et de l'Île Maurice. Collection Les Beautés de la Nature. Delachaux et Niestlé: Neuchâtel.ISBN 2-603-00654-1. 159 pp.
- Wilson, B. 1993.Australian Marine Shells. Prosobranch Gastropods. Kallaroo, Western Australia : Odyssey Publishing Vol. 1 408 pp.
- Vos, C. & Terryn, Y. in Poppe, G.T. & Groh, K. (eds) 2007.A Conchological Iconography. The family Tonnidae. Hackenheim, Germany : ConchBooks pp. 1–121, 63 pls.
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