Modelia granosa

Modelia granosa, common name the southern cat's eye, is a medium to large species of sea snail which has a shell with a pearly interior and a calcareous operculum. It is a marine gastropod mollusc in the family Turbinidae, the turban snails.[1]

Modelia granosa
Drawing with an apertural view of a shell of Modelia granosa
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Vetigastropoda
Order: Trochida
Superfamily: Trochoidea
Family: Turbinidae
Genus: Modelia
Species:
M. granosa
Binomial name
Modelia granosa
(Martyn, 1784)
Synonyms[1]
  • Liotia (Arene) shandi Hutton, 1873
  • Modelia granosa (Martyn, 1784)
  • Trochus granosus Martyn, 1784 (original combination)
  • Turbo (Modelia) granosus (Martyn, 1784)
  • Turbo granosus (Martyn, 1784)
  • Turbo rubicundus Chemnitz, 1781
  • Turbo shandi Hutton, 1873

Description

The size of the shell varies between 25 mm and 80 mm. The orbiculate, imperforate shell has a depressed-conic shape. It is, pinkish yellow, unicolored, or clouded with purplish or brown. The seven whorls are rounded, the upper two smooth, the others closely minutely granulose in regular spiral series. The body whorl is rounded and descending. The subcircular aperture is white and iridescent within. The white columella is wide, subexcavated in the center. The thin callus is shining and rose-tinted.

The ovate operculum is flat within, with 5-6 whorls and a subcentral nucleus. On its outside it is white, thick, subgibbous, and minutely tuberculate at its center, subcanaliculate at its periphery.[2]

Distribution

It is only known to occur in New Zealand.

Notes

Additional information regarding this species:[1]

  • Authority: Use of name from Martyn (1784) validated by ICZN Opinion 479.

References
  1. Marshall, B.; Rosenberg, G. (2014). Modelia granosa (Martyn, 1784). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=413417 on 2014-09-02
  2. G.W. Tryon (1888), Manual of Conchology X; Academy of Natural Sciences, Philadelphia (described as Turbo granosus)
  • Arthur William Baden Powell (1979). New Zealand mollusca. ISBN 0-00-216906-1.
  • Williams S.T., Karube S. & Ozawa T. (2008) Molecular systematics of Vetigastropoda: Trochidae, Turbinidae and Trochoidea redefined. Zoologica Scripta 37: 483–506.
  • Alf A. & Kreipl K. (2003). A Conchological Iconography: The Family Turbinidae, Subfamily Turbininae, Genus Turbo. Conchbooks, Hackenheim Germany
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