Perrinia elisa

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Perrinia elisa
Perrinia elisa 001.jpg
Drawing with an apertural view of a shell of Perrinia elisa
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Vetigastropoda
Superfamily: Seguenzioidea
Family: Chilodontaidae
Genus: Perrinia
Species:
P. elisa
Binomial name
Perrinia elisa
(Gould, 1849) [1]
Synonyms
  • Trochus elisusGould, 1849
  • Turcica elisa(Gould, 1849)

Perrinia elisa is a species of sea snail, a marine gastropod mollusk in the family Chilodontidae. [2] [3]

Contents

Description

The size of the shell varies between 8 mm and 20 mm. The thick, solid, imperforate shell has an acutely conical shape. The elevated spire has straight lateral outlines. The base of the shell is convex. Its color is whitish-ashen. The surface is dull. The apex is minute, its tip subimmersed. The apical whorl has a smooth appearance. The rest of the whorls (7 to 8 in all) are traversed spirally by three strong cords, the central one narrowest, all closely beaded by the decussation of close, regular, elevated lamellae of increment, which sharply sculpture the interstices. Two lamellae arise from each bead of the superior spiral cord. The sutures are very deeply, narrowly channelled. The body whorl is angled at the periphery, and bears 7 concentric lirae on the base, the inner ones smaller. The whole is closely sharply sculptured by radiating lamellae. The very oblique aperture is subquadrate with about 9 sharp entering lirae. The outer lip is beveled. The short columella is subvertical and cylindrical, with three or four small, transverse, rather acute folds on the lower half.

The species is known by the three spirals of the spire whorls and the several small folds of the columella. [4]

Distribution

This marine species occurs off Vietnam, Indonesia and the Philippines.

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References

  1. ↑ Gould, Proc. Bost. Soc. N. H. iii, p. 92, 1849
  2. ↑ Bouchet, P. (2012). Perrinia elisa (Gould, 1849). Retrieved through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=547179 on 2013-04-14
  3. ↑ Poppe G.T., Tagaro S.P. & Dekker H. (2006) The Seguenziidae, Chilodontidae, Trochidae, Calliostomatidae and Solariellidae of the Philippine Islands. Visaya Supplement 2: 1-228.
  4. ↑ Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia (described as Turcica elisa )
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