Eucithara alacris

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

Eucithara alacris
Shell of Eucithara alacris (specimen in MNHN, Paris)
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Clade: Caenogastropoda
Clade: Hypsogastropoda
Clade: Neogastropoda
Superfamily: Conoidea
Family: Mangeliidae
Genus: Eucithara
Species:
E. alacris
Binomial name
Eucithara alacris
Hedley, 1922
Synonyms[1]

Cythara maculata Brazier, 1876

Description

The shell length attains 11 mm; its diameter 4 mm.

The slender, glossy shell is fusiform. It contains 7 whorls, of which 1½ compose a small, smooth, helicoid protoconch. Its colour is white, ornamented with four to six pale orange bands, appearing only in the interstices, not on the ribs. These sometimes coalesce from above and below, thus replacing spiral by radial painting. The radial ribs are well developed, projecting as an angle on the shoulder, continuing from suture to base, and amounting to ten on the body whorl. The spiral threads are sharp on the upper whorls, where they are decussated by radial striae. Gradually they vanish, till on the middle of the body whorl the surface seems smooth to the eye, and only a few engraved spirals can be found with a lens. The mouth of the aperture is linear. The slight varix encloses a small sinus, and extends in a narrow free edge. The inner lip is well developed, with fifteen cross-bars. Beneath the varix are fourteen short entering plicae.[2]

Distribution

This marine species occurs off Australia (Queensland ), and off Vanuatu.

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References
  1. WoRMS (2009). Eucithara alacris Hedley, 1922. In: MolluscaBase (2017). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=433682 on 2017-04-28
  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.
  • Tucker, J.K. 2004 Catalog of recent and fossil turrids (Mollusca: Gastropoda). Zootaxa 682:1-1295.
  • "Eucithara vittata". Gastropods.com. Retrieved 16 January 2019.
  • MNHN, Paris; Eucithara alacris
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