Tonna dolium

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Spotted tun
Tonna dolium (Dolium maculatum), Ceylon - Joseph Allen Skinner Museum - DSC07800.JPG
Scientific classification
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T. dolium
Binomial name
Tonna dolium
(Lamarck, 1822)
Synonyms
  • 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)

Tonna dolium, common name the spotted tun, is a species of large sea snail or tun snail, a marine gastropod mollusc in the family Tonnidae, the tun shells. [1]

Contents

Description

The size of the shell varies between 100 mm and 181 mm.

The thin shell is ovate-globose and ventricose. The spire is generally short. It is composed of six whorls, slightly flattened above. The body 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. The aperture is very large, colored within of a chestnut tint. The outer lip 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. The columella 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]

Distribution

This marine species occurs in the Indo-West Pacific off Tanzania, the Mascarene Basin and off the Philippines.

Related Research Articles

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Tonna is a genus of large sea snails, marine gastropod molluscs in the family Tonnidae, the tun or cask shells.

<i>Tonna galea</i> Species of gastropod

Tonna galea, commonly known as the giant tun, is a species of marine gastropod mollusc in the family Tonnidae. This very large sea snail or tun snail is found in the North Atlantic Ocean as far as the coast of West Africa, in the Mediterranean Sea and the Caribbean Sea. The species was first described by Carl Linnaeus in 1758.

<i>Tonna perdix</i> Species of gastropod

Tonna perdix, common name the partridge tun, is a species of very large sea snail, a marine gastropod mollusc in the family Tonnidae, the tun shells.

<i>Nassarius arcularia</i> Species of gastropod

Nassarius arcularia, the casket nassa or the little box dog whelk, is a species of sea snail, a marine gastropod mollusk in the family Nassariidae, the Nassa mud snails or dog whelks.

<i>Nassarius pullus</i> Species of gastropod

Nassarius pullus, common names : black nassa; olive dog whelk; ribbed dog whelk, is a species of sea snail, a marine gastropod mollusk in the family Nassariidae, the Nassa mud snails or dog whelks.

<i>Harpa amouretta</i> Species of gastropod

Harpa amouretta, common name the lesser harp, is a species of sea snail, a marine gastropod mollusk in the family Harpidae, the harp snails.

<i>Harpa articularis</i> Species of gastropod

Harpa articularis, common name the articulate harp shell, is a species of sea snail, a marine gastropod mollusk in the family Harpidae, the harp snails.

<i>Harpa harpa</i> Species of gastropod

Harpa harpa, common name the true harp or the noble harp, is a species of sea snail, a marine gastropod mollusk in the family Harpidae, the harp snails.

<i>Nassarius dorsatus</i> Species of gastropod

Nassarius dorsatus, common name the channeled nassa, is a species of sea snail, a marine gastropod mollusk in the family Nassariidae, the Nassa mud snails or dog whelks.

<i>Malea pomum</i> Species of gastropod

Malea pomum, common name the Pacific grinning tun, is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae, the tun shells.

<i>Malea ringens</i> Species of gastropod

Malea ringens, common name the grinning tun, is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae, the tun shells.

<i>Tonna allium</i> Species of gastropod

Tonna allium, common name the costate tun, is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae, the tun shells.

Tonna dunkeri is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae, the tun shells.

Tonna hawaiiensis is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae, the tun shells.

<i>Tonna pennata</i> Species of gastropod

Tonna pennata is a large species of sea snail, a marine gastropod mollusc in the family Tonnidae, the tun shells. Commonly known as the Atlantic partridge tun, the species is a predator of animals much larger than itself, particularly sea cucumbers.

<i>Tonna sulcosa</i> Species of gastropod

Tonna sulcosa, common name banded tun, is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae, the tun shells.

<i>Tonna tessellata</i> Species of gastropod

Tonna tessellata, the mosaic tun,tessellate tun or maculated tun, is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae.

<i>Tonna chinensis</i> Species of gastropod

Tonna chinensis, common name : the China tun, is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae, the tun shells.

<i>Nassarius hirtus</i> Species of gastropod

Nassarius hirtus, common name the rough nassa, is a species of sea snail, a marine gastropod mollusk in the family Nassariidae, the Nassa mud snails or dog whelks.

<i>Tonna variegata</i> Species of gastropod

Tonna variegata, commonly known as the variegated tun, is a species of marine gastropod mollusc in the family Tonnidae.

References

Further reading