''Pseudorhaphitoma darnleyi'' is a small

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 Marine is an adjective meaning of or pertaining to the sea or ocean. Marine or marines may refer to: Ocean * Maritime (disambiguation) * Marine art * Marine biology * Marine debris * Marine habitats * Marine life * Marine pollution Military * ...

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 Mangeliidae.WoRMS (2009). Pseudorhaphitoma darnleyi (Brazier, 1876). In: MolluscaBase (2017). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=434777 on 2018-01-02

Description

The length of the shell attains 12 mm. (Original description) The slender pyramidal shell is acuminated. It is six-sided, horny brown, longitudinally ribbed, crossed with raised striae, somewhat rugose and with smooth interstices. The shell contains 7-8 flattened

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 suture is opaque. The sculpture is much plainer 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 inner lip shows a thin deposit of callus. The outer lip is thin, edged with black. The sinus is wide, cut deep down. 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. The slender, six-sided shell has a pyramidal shape. It is longitudinally ribbed and crossed with raised striae, somewhat rugose, interstices smooth. It contains 7 to 8 flattened

s. The outer lip is slightly varicose. The sinus is wide and deep. The color is yellowish brown, the lip sometimes black-edged. This species is remarkable by the absence of fine grained spirals and is by this an aberrant members of this genus. Hedley, C. 1922. A revision of the Australian Turridae. Records of the Australian Museum 13(6): 213-359, pls 42-56

Distribution

This marine genus is endemic to Australia and occurs in the

Gulf of Carpentaria The Gulf of Carpentaria (, ) is a large, shallow sea enclosed on three sides by northern Australia and bounded on the north by the eastern Arafura Sea (the body of water that lies between Australia and New Guinea). The northern boundary is ...

and off Queensland, Australia

References

{{Taxonbar, from=Q10355182 darnleyi Gastropods described in 1876 Gastropods of Australia