Anacithara robusta

Anacithara robusta is a species of sea snail, a marine gastropod mollusk in the family Horaiclavidae.[1]

Anacithara robusta
Original image of a shell of Anacithara robusta
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Neogastropoda
Superfamily: Conoidea
Family: Horaiclavidae
Genus: Anacithara
Species:
A. robusta
Binomial name
Anacithara robusta
Hedley, 1922

Description

The length of the shell attains 5.5 mm, its diameter 2 mm.

(Original description) The small, solid shell has a biconical shape. Its colour is dull white, the apex pink. It contains six whorls, including the protoconch. The ribs are prominent, discontinuous from whorl to whorl, projecting at the periphery and gradually vanishing on the base. They number nine on the penultimate whorl. Very many and close spiral threads overrun both ribs and interstices. Two spirals, larger and wider spaced than the rest, traverse the periphery and ascend the spire. The aperture is protected by a thick varix, from which a free limb, insinuate at the base, projects into the aperture. The sinus is semicircular. The siphonal canal is short and open.[2]

Distribution

This marine species is endemic to Australia and occurs off Queensland.

References
  1. WoRMS (2015). Anacithara rissoina Hedley, 1922. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=432964 on 2016-12-19
  2. Hedley, C. 1922. A revision of the Australian Turridae. Records of the Australian Museum 13(6): 213–359, pls 42–56
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