Euspira napus
From Wikipedia, the free encyclopedia
| Euspira napus | |
|---|---|
 | |
| Shell of Euspira napus | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Family: | Naticidae |
| Genus: | Euspira |
| Species: | E. napus |
| Binomial name | |
| Euspira napus (E. A. Smith, 1904) | |
| Synonyms[1] | |
| |
Euspira napus is a species of predatory sea snail, a marine gastropod mollusk in the family Naticidae, the moon snails.[1]
The diameter of the shell varies between 30 mm and 40 mm.[2]
The shell is rounded, solid, and smooth, with a low spire. Its aperture is semi-circular, bordered by a thin outer lip, while the base features a distinct yet narrow umbilicus and a slightly thickened edge on the inner lip. The surface sculpture consists of fine, closely set growth lines. The living animal has a horny operculum.[2]
The shell is white, with a dull brown periostracum (a thin, skin-like outer covering), typically displaying a pattern of fine spiral lines.[2]
