Steromphala umbilicaris

Steromphala umbilicaris is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.^[1]

Steromphala umbilicaris
Shell of Steromphala umbilicaris
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Vetigastropoda
Order:	Trochida
Superfamily:	Trochoidea
Family:	Trochidae
Genus:	Steromphala
Species:	S. umbilicaris
Binomial name
Steromphala umbilicaris (Linnaeus, 1758)
Synonyms[1]
Gibbula desserea Risso, 1826 Gibbula mediterranea Risso, 1826 Gibbula umbilicaris (Linnaeus, 1758) Gibbula umbilicaris umbilicaris (Linnaeus, 1758) Gibbula umbilicaris var. conica Monterosato, 1888 Gibbula umbilicaris var. globosa Monterosato, 1888 Gibbula umbilicaris var. gouini Monterosato, 1888 Gibbula umbilicaris var. intermedia Pallary, 1912 Gibbula umbilicaris var. nobrei Monterosato, 1888 Gibbula umbilicaris var. rubescens Monterosato, 1888 Trochus fuscatus Gmelin, 1791 Trochus latior Monterosato, 1880 Trochus latior var. albina Monterosato, 1880 Trochus umbilicaris Linnaeus, 1758 Trochus umbilicaris var. concolor Bucquoy, Dautzenberg & Dollfus, 1884 Trochus umbilicaris var. doriae Tapparone Canefri, 1869 Trochus umbilicaris var. soluta Bucquoy, Dautzenberg & Dollfus, 1884 Trochus umbilicaris var. tessellata Tapparone Canefri, 1869 Trochus umbilicaris var. undulata Bucquoy, Dautzenberg & Dollfus, 1884

Description

The size of an adult shell varies between 10 mm and 25 mm. The conical shell is umbilicate. Its color is cinereous, reddish, or purplish-brown, obscurely clouded, dotted or flamed with white The conical spire is acuminate. There are about seven whorls, slightly convex, spirally striate, microscopically obliquely striate. The lirae are generally subobsolete on the last whorl. The periphery is obtusely angulate. The aperture is rather small, oblique, rounded-quadrate, angled at the base and smooth within. The columella is arcuate above, straightened below.^[2]

Distribution

This marine species occurs in European waters and in the Mediterranean Sea.