Halgyrineum louisae

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Halgyrineum louisae
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Littorinimorpha
Family: Cymatiidae
Genus: Halgyrineum
Species:
H. louisae
Binomial name
Halgyrineum louisae
(Lewis, 1974) [1]
Synonyms [2]
  • Gyrineum atlanticumFechter, 1975
  • Gyrineum louisaeLewis, 1974

Halgyrineum louisae is a species of predatory sea snail, a marine gastropod mollusk in the family Cymatiidae. [2]

Contents

Description

The shell is up to 28 mm high, with a rather high spire, characteristically flattened along an axis perpendicular to the aperture. [2] Protoconch is with 3 whorls, the protoconch I is less than one whorl with a frosted surface, the protoconch II with a conspicuous sculpture of axial ribs and spiral cords, both narrower than the interspaces and forming a regular lattice. [2] Teleoconch is with 5-6 rounded whorls. [2] Sculpture of low, subequal spiral cords, as broad as the interspaces, with low and narrow axial ribs forming small knobs at their intersection with the cords. [2] Varixes are situated along the broadest section of the shell, moderately thick, repeated after a little more than half a whorl so that they are slightly and regularly offset along the spire, overrun by the spirals. [2] The aperture is oval; outer lip faintly fluted inside; parietal and columellar edge forming a continuous callus, the parietal edge with a small but well-marked denticle, the columella is faintly tuberculate. [2] Siphonal canal is open, moderate in length. [2] Shell colour is from very light tan to whitish. [2]

Distribution

The type locality is Oahu, Hawaii, 180 fathoms (333 m). [2]

Distribution of Halgyrineum louisae include:

Life cycle

Type of larval development: long planktotrophic (teleplanic), inferred from multispiral protoconch with well-developed protoconch II. [2]

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References

This article incorporates CC-BY-SA-3.0 text from the reference the World Register of Marine Species. [2]

  1. ↑ Lewis H. (1974). "A new species of Hawaiian Gyrineum (Cymatiidae)". The Nautilus88(1): 10-13.
  2. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Halgyrineum louisae (Lewis, 1974) . Retrieved through: World Register of Marine Species  on 5 December 2018.
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