Conus Exiguus
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''Conus exiguus'', common name Cabrit's cone, is a species of
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 ...
Conidae Conidae, with the current common name of "cone snails", is a taxonomic family (previously subfamily) of predatory sea snails, marine gastropod molluscs in the superfamily Conoidea. The 2014 classification of the superfamily Conoidea, groups onl ...
, the
cone snails A cone is a three-dimensional geometric shape that tapers smoothly from a flat base (frequently, though not necessarily, circular) to a point called the apex or vertex. A cone is formed by a set of line segments, half-lines, or lines co ...
and their allies. Like all species within the genus ''Conus'', these snails are
predatory Predation is a biological interaction where one organism, the predator, kills and eats another organism, its prey. It is one of a family of common feeding behaviours that includes parasitism and micropredation (which usually do not kill th ...
and
venomous Venom or zootoxin is a type of toxin produced by an animal that is actively delivered through a wound by means of a bite, sting, or similar action. The toxin is delivered through a specially evolved ''venom apparatus'', such as fangs or a sti ...
. They are capable of "stinging" humans, therefore live ones should be handled carefully or not at all.


Description

The size of the shell varies between 14 mm and 54 mm. The violaceous shell is more or less marbled with chestnut, and more or less granular on the
body whorl The body whorl is part of the morphology of the shell in those gastropod mollusks that possess a coiled shell. The term is also sometimes used in a similar way to describe the shell of a cephalopod mollusk. In gastropods In gastropods, the b ...
. The convex
spire A spire is a tall, slender, pointed structure on top of a roof of a building or tower, especially at the summit of church steeples. A spire may have a square, circular, or polygonal plan, with a roughly conical or pyramidal shape. Spires are ...
convex is conical and tuberculated. The
aperture In optics, an aperture is a hole or an opening through which light travels. More specifically, the aperture and focal length of an optical system determine the cone angle of a bundle of rays that come to a focus in the image plane. An opt ...
is violaceous.G.W. Tryon (1884) Manual of conchology, structural and systematic, with illustrations of the species, vol. VI; Philadelphia, Academy of Natural Sciences
(described as ''Conus plumbeus'')


Distribution

This marine species occurs off
New Caledonia ) , anthem = "" , image_map = New Caledonia on the globe (small islands magnified) (Polynesia centered).svg , map_alt = Location of New Caledonia , map_caption = Location of New Caledonia , mapsize = 290px , subdivision_type = Sovereign st ...
,
Samoa Samoa, officially the Independent State of Samoa; sm, Sāmoa, and until 1997 known as Western Samoa, is a Polynesian island country consisting of two main islands (Savai'i and Upolu); two smaller, inhabited islands (Manono Island, Manono an ...
and
Vietnam Vietnam or Viet Nam ( vi, Việt Nam, ), officially the Socialist Republic of Vietnam,., group="n" is a country in Southeast Asia, at the eastern edge of mainland Southeast Asia, with an area of and population of 96 million, making i ...
.


References

* Bernardi, A. B., 1859. ''Description d'espèces nouvelles de l'Archipel Calédonien''. Journal de Conchyliologie 7: 377–378 * Röckel, D., Korn, W. & Kohn, A.J., 1995. ''Manual of the living Conidae. Volume 1: Indo-Pacific region''. Hemmen: 517 pp
Petit, R. E. (2009). ''George Brettingham Sowerby, I, II & III: their conchological publications and molluscan taxa.'' Zootaxa. 2189: 1–218

Puillandre N., Duda T.F., Meyer C., Olivera B.M. & Bouchet P. (2015). ''One, four or 100 genera? A new classification of the cone snails.'' Journal of Molluscan Studies. 81: 1–23


Gallery

Below are several color forms: File:Conus exiguus 3.jpg, ''Conus exiguus'' Lamarck, J.B.P.A. de, 1810 File:Conus exiguus 4.jpg, ''Conus exiguus'' Lamarck, J.B.P.A. de, 1810 File:Conus exiguus 5.jpg, ''Conus exiguus'' Lamarck, J.B.P.A. de, 1810


External links


The ''Conus'' Biodiversity website

Cone Shells – Knights of the Sea
*
Holotype in MNHN, Paris
{{DEFAULTSORT:Conus Exiguus exiguus Gastropods described in 1810