''Clionella striolata'' is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

sea snail Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the ...

, a marine

gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

mollusk Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is e ...

in the

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

Clavatulidae Clavatulidae is a taxonomic family of sea snails, marine gastropod mollusks in the superfamily Conoidea. The family is not well differentiated morphologically. Clavatulidae was raised, based on cladistic analysis, from subfamily to the family ...

Description

The size of an adult shell varies between 14 mm and 22 mm. The squat, bucciniform shell has convex whorls and a rather large aperture. The siphonal canal is barely notched. The anal sinus is very shallow. The arcuate ribs number 14-19 per whorl, but becoming sometimes obsolete on later whorls. The color of the shell consists of patches of yellowish-brown. Characteristic for this species is that the spiral

sculpture Sculpture is the branch of the visual arts that operates in three dimensions. Sculpture is the three-dimensional art work which is physically presented in the dimensions of height, width and depth. It is one of the plastic arts. Durable sc ...

shows 4–5 well-spaced grooves per

whorl A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs). Whorls in nature File:Photograph and axial plane floral ...

. Furthermore, the subsutural cord is feeble.Kilburn, R.N. (1985). ''Turridae (Mollusca: Gastropoda) of southern Africa and Mozambique. Part 2. Subfamily Clavatulinae''. Ann. Natal Mus. 26(2), 417–470.

Distribution

This marine species occurs in lower midtidal rock pools off Namaqualand to Cape Hangklip, South Africa.

References

* Turton, W. H. 1932. The marine shells of Port Alfred, South Africa. London: Oxford University Press. xvi, 331. pp.

External links

* {{DEFAULTSORT:Clionella Striolata Endemic fauna of South Africa

striolata ''Striolata'' is a monotypic genus of gastropods belonging to the family Cochlostomatidae. The only species is '' Striolata striolata''.MolluscaBase eds. (2022). MolluscaBase. Striolata A. J. Wagner, 1897. Accessed through: World Register of Marin ...

Gastropods described in 1932