Microdrillia commentica

Microdrillia commentica
Original drawing of a shell of Microdrillia commentica
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Clade: Caenogastropoda
Clade: Neogastropoda
Superfamily: Conoidea
Family: Borsoniidae
Genus: Microdrillia
Species: M. commentica
Binomial name
Microdrillia commentica
(Hedley, 1915)
Synonyms[1]
  • Drillia commenticus Hedley, 1915 (original combination)
  • Turridrupa commentica Ch. Hedley, 1922

Microdrillia commentica is a species of sea snail, a marine gastropod mollusk in the family Borsoniidae.[1]

Description

The height of the small shell attains 7 mm.

(Original description) The small, solid shell has a narrowly fusiform shape. Its colour is uniform cream. The shell contains nine whorls. The first three are small and smooth, the next ones with a dozen prominent curved radial ribs. On the following whorl, a keel arises from the base, reaches the periphery, and, as a conspicuous median keel, descends to the aperture. The upper whorls have a second conspicuous spiral keel below the suture, between which and the peripheral keel lies the fasciole, a third and fainter keel runs below the median. On the body whorl, there are about a dozen spirals below the main keel. The fasciole is sculptured by transverse crescentic threads becoming weaker on the later whorls. Radial threads also appear over the whole shell. The aperture is narrow, notch deep, subsutural. The outer lip is simple, thin and projecting. The siphonal canal is broad and short. [2]

Distribution

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

References

  1. 1 2 WoRMS (2015). Microdrillia commentica. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=434401 on 2016-03-15
  2. ↑ Hedley C. (1915), Studies on Australian Mollusca. Part XII; Proceedings of the Linnean Society of New South Wales v. 39 (described as Drillia commenticus)
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