''Kanamarua adonis'' 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 ...

Colubrariidae Colubrariidae are a taxonomic family of medium-sized sea snails, marine gastropod mollusks in the superfamily Buccinoidea. Bouchet, P. (2010). Colubrariidae. In: Bouchet, P.; Gofas, S.; Rosenberg, G. (2010) World Marine Mollusca database. Access ...

.MolluscaBase eds. (2022). MolluscaBase. Kanamarua adonis (Dall, 1919). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=491046 on 2022-11-22

Description

(Original description as ''Conus (Aulacofusus) adonis'') The small shell measures 37 mm. It is bulimiform, thin, whitish with a pale olive periostracum. The shell contains about six

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 ...

s, exclusive of the (lost)

protoconch A protoconch (meaning first or earliest or original shell) is an embryonic or larval shell which occurs in some classes of molluscs, e.g., the initial chamber of an ammonite or the larval shell of a gastropod. In older texts it is also called ...

. It has a very narrowly channeled suture and moderately rounded whorls. 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 ...

consists of narrow equal flat threads (about three to a millimeter) with very narrow interspaces over the whole shell, though the interspaces are a little wider on the apical whorls and the spirals under-run there by thread-like axial sculpture, giving a somev/hat punctate appearance under magnification. 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 elongate and rather narrow. The outer lip is thickened, not reflected, with traces of liration near the inside margin. The body and the columella contain a continuous layer of enamel. The

siphonal canal The siphonal canal is an anatomical feature of the shells of certain groups of sea snails within the clade Neogastropoda. Some sea marine gastropods have a soft tubular anterior extension of the mantle called a siphon through which water is ...

is short and wide. It has no siphonal fascicle.[ https://biodiversitylibrary.org/page/7766313 Dall, W. H. (1919). Descriptions of new species of Mollusca from the North Pacific Ocean in the collection of the United States National Museum. Proceedings of the United States National Museum. 56 (2295): 293-371]

Distribution

This marine species occurs in Suruga Gulf, Japan.

References

* Fraussen K. & Lamy D. (2008). Revision of the genus Kanamarua Kuroda, 1951 (Gastropoda: Colubrariidae) with the description of two new species. Novapex 9(4): 129-140

External links

Bouchet, P. & Warén, A. (1986). Mollusca Gastropoda: Taxonomical notes on tropical deep water Buccinidae with descriptions of new taxa. in: Forest, J. (Ed.) Résultats des Campagnes MUSORSTOM I et II Philippines (1976, 1980). Tome 2. Mémoires du Muséum national d'Histoire naturelle. Série A, Zoologie. 133: 457-499
Colubrariidae Gastropods described in 1919 {{Colubrariidae-stub