''Acanthodaphne abbreviata'' 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 in the family

Raphitomidae Raphitomidae is a family of small to medium-sized sea snails, marine gastropod mollusks in the superfamily Conoidea.Bouchet P. & Rocroi J.-P. (Ed.) (2005). "Classification and nomenclator of gastropod families". '' Malacologia'' 47(1-2). . 3 ...

.MolluscaBase (2019). MolluscaBase. Acanthodaphne abbreviata (Schepman, 1913). Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=1376978 on 2019-12-30

Description

The length of the species reaches 6 mm, its diameter 3¼ mm. (Original description) The small, thin shell has a shortly biconical shape. it is transparently white. It contains about 8

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 (the

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 ...

is slightly eroded), of which 4 form a brownish (bleached) nucleus. Subsequent whorls (excepted last one), practically exist only of the excavation, which is sculptured by curved, raised striae and is bordered, just below the suture, by a conspicuous, spiral liration, with laterally compressed, fold-like beads. These become fainter towards the aperture. Just above the suture, a second row of depressed, slightly pointed tubercles, form a keel below the excavation of 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 ...

, about 12 in number on that whorl, where they form the top of short, oblique, axial ribs. The lower part of the body whorl contains about 15 lirae and a few intermediate ones. Moreover, fine growth-striae and excessively small granules are visible on the whole shell, by the aid of a strong lens. The body whorl is regularly attenuated towards its base, only slightly convex, with a very short, broad

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 ...

. The aperture is obliquely oblong, with a sharp angle above and a narrow gutterlike siphonal canal below. The peristome is thin, with a wide, moderately deep sinus above. The columellar margin is slightly concave above, straighter and directed to the left along the siphonal canal, with a thin layer of enamel, thicker below.Schepman, 1913. The prosobranchia of the Siboga expedition. Part IV -V - VI: Toxoglossa

Distribution

This marine species occurs off Eastern Indonesia, in the Ceram Sea at a depths of 835 m.

References

External links

* *
Bonfitto A. & Morassi M. (2006). ''A new genus of Indo-West Pacific Turridae (Gastropoda: Prosobranchia)''. The Veliger. 48(3): 136-142
{{DEFAULTSORT:Acanthodaphne Abbreviata

abbreviata ''Abbreviata'' is a genus of nematodes belonging to the family Physalopteridae. The genus has almost cosmopolitan distribution In biogeography, cosmopolitan distribution is the term for the range of a taxon that extends across all or most o ...

Gastropods described in 1913