| Spotted tun | |
|---|---|
 | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Family: | Tonnidae |
| Genus: | Tonna |
| Species: | T. dolium |
| Binomial name | |
| Tonna dolium (Lamarck, 1822) | |
| Synonyms | |
| |
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]
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]
This marine species occurs in the Indo-West Pacific off Tanzania, the Mascarene Basin and off the Philippines.
Tonna is a genus of large sea snails, marine gastropod molluscs in the family Tonnidae, the tun or cask shells.
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.
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.
Nassarius pullus, common names : black nassa; olive dog whelk; ribbed dog whelk, is a species of sea snail, a marine gastropod mollusc in the family Nassariidae, the nassa mud snails or dog whelks.
Harpa amouretta, common name the lesser harp, is a species of sea snail, a marine gastropod mollusk in the family Harpidae, the harp snails.
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.
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.
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.
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 boucheti 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.
Tonna lischkeana is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae, the tun shells.
Tonna morrisoni is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae, the tun shells.
Tonna oentoengi is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae, the tun shells.
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.
Tonna sulcosa, common name banded tun, is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae, the tun shells.
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.
Tonna zonata is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae, the tun shells.
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.
Tonna variegata, commonly known as the variegated tun, is a species of marine gastropod mollusc in the family Tonnidae.
