Eucithara monochoria

Eucithara monochoria is a small sea snail, a marine gastropod mollusk in the family Mangeliidae.[1]

Eucithara monochoria
Original image of a shell of Eucithara monochoria
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Clade: Caenogastropoda
Clade: Hypsogastropoda
Clade: Neogastropoda
Superfamily: Conoidea
Family: Mangeliidae
Genus: Eucithara
Species:
E. monochoria
Binomial name
Eucithara monochoria
Hedley, 1922

Description

The shell length attains 5 mm; its diameter 2 mm.

(Original description) The small, stout, solid shell has a biconical shape. Its colour is russet-brown, with a definite buff band on the shoulder covering three spirals, and a less definite buff band on the base. The penultimate, antepenultimate whorls, and varix also buff. The shell contains 6½ whorls, of which 2½ compose the sharply differentiated protoconch. Sculpture -The earlier whorls of the protoconch are smooth, and the last has about twenty delicate radial riblets. The ribs on the adult shell are broad, prominent, perpendicular, and discontinuous, at first eleven, at last nine. Both ribs and interstices are traversed by flat-topped elevated spirals, spaced more than their breadth apart, on the body whorl twenty-five, on the penultimate eight. The spirals are grained by the passage of fine radial striae. The aperture : A substantial varix stretches a free limb over the mouth. Beneath it are six small tubercles. On the inner lip are ten entering plaits.[2]

Distribution

This marine genus is endemic to Australia and occurs off Queensland

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References
  1. WoRMS (2009). Eucithara monochoria Hedley, 1922. In: MolluscaBase (2017). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=433743 on 2017-04-29
  2. Hedley, C. 1922. A revision of the Australian Turridae. Records of the Australian Museum 13(6): 213-359, pls 42-56 This article incorporates text from this source, which is in the public domain.
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