Calliostoma gualterianum

Calliostoma gualterianum, common name Gualtieri's top shell, is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.[4]

Calliostoma gualterianum
Drawing of a shell of Calliostoma gualterianum
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Vetigastropoda
Superfamily:
Trochoidea
Family:
Calliostomatidae
Subfamily:
Calliostomatinae
Genus:
Calliostoma
Species:
C. gualterianum
Binomial name
Calliostoma gualterianum
(Philippi, 1848) [1]
Synonyms
  • Trochus gualterianus Philippi, 1848 (original description)
  • Trochus gualtierianus Fischer [2]
  • Trochus gualterii Weinkauff [3]

Description

The size of the shell varies between 10 mm and 17 mm. The imperforate, polished, solid shell has a conical-elevated shape with 9 whorls. It is yellowish-brown or olive, clouded with brown, the earlier 4 whorls dark bluish or greenish. The shell is spirally sulcate, the 2d whorl somewhat granulate. The rest of the whorls are smooth, flat, and with a narrow supra-sutural fasciole, which on the body whorl is not developed. The periphery is rounded angular. The base of the shell is smooth except for about 4 fine riblets around the axis. The aperture is smooth within. The nacreous columella is a trifle swollen at its base, and either purple or whitish inside.[5]

Distribution

This species occurs in the Mediterranean Sea.

References
  1. Philippi., in Conchyl. Cab., p. 69, t. 13,'f. 15.
  2. Fischer, Coq. Viv., p. 404, 1. 119, f. 5.
  3. Weinkauff, Conchyl. des Mittelm. ii, p. 361
  4. Calliostoma gualterianum (Philippi, 1848). Retrieved through: World Register of Marine Species.
  5. Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia
  • Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 180–213
  • "Calliostoma (Calliostoma) gualterianum". Gastropods.com. Retrieved 15 January 2019.
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