Euspira nitida
Euspira nitida, the common necklace shell, is a species of sea snail, a marine gastropod mollusc in the family Naticidae, the moon snails.
Distribution
The common necklace shell is a common sea snail occurring in the sublittoral zone and deeper waters along sandy coasts of the North Sea, from France to Norway, and the North East Atlantic. 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.Description of the shell
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 shallow 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.Taxonomy
Euspira nitida '''' is the earliest available name for the common, shallow water, small-sized Euspira species that, in the Atlantic, has been called alderi, and in the Mediterranean has been called pulchella. Donovan's name was based on albino specimens of this species, which is why the name nitida has in the past been wrongly rejected by some authors as that of an "exotic" or "tropical" species.There are many synonyms for this species Euspira poliana Euspira pulchella Lunatia alderi Lunatia intermedia Lunatia poliana Lunatia pulchella Lunatica nitida Natica alderi Forbes, 1838Natica alderi var. elata Bucquoy, Dautzenberg & Dollfus, 1883Natica alderi var. globulosa Bucquoy, Dautzenberg & Dollfus, 1883Natica alderi var. lactea Jeffreys, 1867Natica alderi var. subovalis Jeffreys, 1867Natica alderi var. ventricosa Jeffreys, 1867Natica complanata Locard, 1886Natica intermedia Philippi, 1836 Natica neustriaca Locard, 1886Natica nitida Natica parvula Tapparone Canefri, 1869Natica poliana Delle Chiaje, 1826Natica pulchella Risso, 1826Nerita nitida Donovan, 1804 Nerita poliana Delle Chiaje, 1830Polinices pulchellus Polinices alderi Polinices intermedia Polinices poliana Polinices alderi
- ''Polinices pulchella''