''Canarium urceus'' is a

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

sea snail Sea snails are slow-moving marine (ocean), marine gastropod Mollusca, molluscs, usually with visible external shells, such as whelk or abalone. They share the Taxonomic classification, taxonomic class Gastropoda with slugs, which are distinguishe ...

, a marine

gastropod Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, freshwater, and fro ...

mollusk Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The ...

in the

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

Strombidae Strombidae, common name, commonly known as the true conchs, is a Taxonomy (biology), taxonomic family (biology), family of medium-sized to very large sea snails in the superfamily (zoology), superfamily Stromboidea, and the Epifamily Neostromboid ...

, the true conchs.

Sister taxa

''Canarium incisum'' (Wood, 1828); ''Canarium anatellum'' (Duclos, 1844); ''Canarium esculentum'' (Maxwell, Rymer, Congdon, Dekkers, 2020); ''Canarium geelvinkbaaiensis'' Dekkers and Maxwell, 2020; ''Canarium manintveldi'' Dekkers and Maxwell, 2020; ''Canarium youngorum'' Dekkers and Maxwell, 2020; ''Canarium orrae'' (Abbott, 1960)

Description

"The shell is elongated and fusiform and may appear biconic. The spire and bodywhorl have a distinctive rounded nodulated shoulder, that may become acute towards the anterior of the shell as the nodulation become finer, more acute and denser. The anterior canal is often well formed and acute in nature, being slightly reflected dorsally. The posterior of the bodywhorl is stained, and this staining continues to the dorsum, where it remains along the outer lip marginal fold and onto the dorsal whorl proper. The spire is always nodulated with the knobs varying from acute in some populations to more rounded and less pronounced in others. The aperture is margined in all cases with dark staining. The inner aperture with dark lirations over a rosy white base colour. The columella is midnight black, sometimes with some traces of deep plum that flush the posterior. The lirations of the columella while present, are in distinct" (Maxwell et al 2020). (PDF) Canarium urceus (Linné, 1758) Studies Part 1: The Recircumscription of Strombus urceus Linné, 1758 (Neostromboidae: Strombidae). Available from: https://www.researchgate.net/publication/341590804_Canarium_urceus_Linne_1758_Studies_Part_1_The_Recircumscription_of_Strombus_urceus_Linne_1758_Neostromboidae_Strombidae ccessed Apr 22 2021

Distribution

This species is restricted to Singapore and The South China Sea (Maxwell 2020).

References

* Dautzenberg, Ph. (1929). ''Mollusques testaces marins de Madagascar''. Faune des Colonies Francaises, Tome III * * * * Liverani V. (2014) The superfamily Stromboidea. Addenda and corrigenda. In: G.T. Poppe, K. Groh & C. Renker (eds), A conchological iconography. pp. 1–54, pls 131-164. Harxheim: Conchbooks. * Tsi, C. Y. & Ma, S. T. (1982). A preliminary checklist of the marine gastropoda and Bivalvia (Mollusca) of Hong Kong and southern China. In: Proceedings of the first international marine biological workshop: The marine flora and fauna of Hong Kong and southern China (ed. Morton, B.), vol. 1, pp431–458. Hong Kong University Press, Hong Kong. * Walls, J.G. (1980). ''Conchs, tibias and harps. A survey of the molluscan families Strombidae and Harpidae''. T.F.H. Publications Ltd, Hong Kong

External links

Linnaeus, C. (1758). Systema Naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Editio decima, reformata [10th revised edition], vol. 1: 824 pp. Laurentius Salvius: Holmiae
* * Strombidae Gastropods described in 1758 Taxa named by Carl Linnaeus {{Strombidae-stub