| Euspira pulchella | |
|---|---|
| Apertural and abapertural view of the shell of Euspira pulchella. | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| (unranked): | clade Caenogastropoda clade Hypsogastropoda clade Littorinimorpha |
| Superfamily: | Naticoidea |
| Family: | Naticidae |
| Genus: | Euspira |
| Species: | E. pulchella |
| Binomial name | |
| Euspira pulchella (Risso, 1826) |
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| Synonyms | |
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Euspira pulchella (common name : Common necklace shell) is a species of sea snail, a marine gastropod mollusc in the family Naticidae, the moon snails.
Contents |
The Common necklace shell is a common sea snail occurring in the sublittoral zone and deeper waters (exceptionally up to 2,000 m) along sandy coasts of the North Sea, from France to Norway, and the North East Atlantic (Iceland). It is also common in the Mediterranean Sea. It can be frequently found in great numbers washed ashore on beaches. It has been present in the North Sea since the Pliocene.
The globular shell is rather small with a low spire : max. 16 mm high and 14 mm wide. The shell has a rather pointed apex. There are 5 to 6 gently convex whorls with an undeep suture. The body whorl is strongly rounded and covers almost the whole shell. The aperture is rather ovate and has a smooth outer lip. A siphonal canal is lacking. The umbilicus is partly covered with a callus. The horny operculum is composed of corneous material. The surface of the shell is smooth and shiny and lacks sculpture. Its color is a pale brown-yellow stained with orange to red-brown spots, arranged in four to five spiral lines. The shell of washed up specimens shows often a blue-black discoloration.
Euspira pulchella was originally described by Risso in 1826 as Natica pulchella. There are many synonyms for this species [1]