''Leucosyrinx esilda'' 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 ...

of sea snail, a marine gastropod

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 group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

Pseudomelatomidae Pseudomelatomidae is a family of predatory sea snails, marine gastropods included in the superfamily Conoidea (previously Conacea) and part of the Neogastropoda ( Bouchet & Rocroi, 2005). In 1995 Kantor elevated the subfamily Pseudomelatomina ...

, the turrids and allies.

Description

The length of the shell attains 24 mm, its diameter 9.7 mm. (Original description) The shell is fusiform with the

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 a ...

longer than 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 ...

. It is chalky, apically eroded, with a pale gray, very thin periostracum and about five remaining whorls. The suture is appressed with a slightly constricted anal fasciole in front of it. About sixteen subequal, low, rounded protective ribs cross the upper whorls from in front of the fasciole with subequal interspaces and, on the body whorl, cease rather abruptly near the periphery. These ribs are not particularly strong or abrupt at their beginning. 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 ...

consists of six or eight faintly incised lines in front of the suture and on the fasciole, and beginning again on the base near the anterior ends of the ribs and continuous but not sharp over the base and siphonal canal. The band between the two series includes the ribbed part of the whorl and is sculptured with irregular, more or less retractive, oblique, vermicular, more or less punctate markings which override ribs and intervals with about the same strength as the spirals. The whorls are moderately rounded, spire subacute. The anal sulcus is wide and shallow. The outer

lip The lips are the visible body part at the mouth of many animals, including humans. Lips are soft, movable, and serve as the opening for food intake and in the articulation of sound and speech. Human lips are a tactile sensory organ, and can be ...

is thin and simple. The body contains a wash of callus extending also over the short, straight, obliquely truncate, slightly twisted

columella Lucius Junius Moderatus Columella (; Arabic: , 4 – ) was a prominent writer on agriculture in the Roman Empire. His ' in twelve volumes has been completely preserved and forms an important source on Roman agriculture, together with the wo ...

. The siphonal canal is short and wide. W.H. Dall (1908) Reports on the Mollusca and Brachiopoda, Bulletin of the Museum of Comparative Zoology at Harvard College. vol. 43
/ref>

Distribution

This marine species occurs in the

Gulf of Panama The Gulf of Panama ( es, Golfo de Panamá) is a gulf of the Pacific Ocean off the southern coast of Panama, where most of eastern Panama's southern shores adjoin it. The Gulf has a maximum width of , a maximum depth of and the size of . The Pana ...

at depth of 1335 m.

References

External links

*
Gastropods.com: ''Leucosyrinx esilda''
{{DEFAULTSORT:Leucosyrinx Esilda esilda Gastropods described in 1908