Anacithara rissoina

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

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

Description

The length of the shell attains 6 mm, its diameter 2 mm.

(Original description) The rather solid shell is elongate, rounded at the base and blunt at the apex. Its colour is dull white, with faint orange spots on the back of the body whorl. It contains six whorls, rounded and constricted at the sutures. The ribs are rounded and placed their breadth apart, alternate from whorl to whorl, undulate the suture, extend to the base, and number twelve on the penultimate whorl. The spirals are fine threads of uniform size and spacing, crossing both ribs and interstices, extending over the whole whorl except the fasciole area, numbering eight on the penultimate whorl and twenty on the body whorl. The wide aperture is unarmed. The varix is broad and high. The sinus is wide and shallow. The siphonal canal is a mere notch.[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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