dcsimg

Comprehensive Description

provided by Invertebrates of the Salish Sea
A top shell with a pearly interior, no nodes on columella, umbilicus closed, has tan or brown, beaded spiral ridges on a white background. The base of the body whorl is nearly flat, and the sutures between whorls are not deeply indented. The animal is cream colored with brown spots. Periostracum is usually gray, brown, or olive-green.
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Invertebrates of the Salish Sea

Look Alikes

provided by Invertebrates of the Salish Sea
How to Distinguish from Similar Species: C. ligatum has unbeaded spiral ridges and clearly convex whorls. C. annulatum also has beaded spirals but the lower spiral on each whorl is blue or purplish.
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Invertebrates of the Salish Sea

Habitat

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Depth Range: Subtidal
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Rosario Beach Marine Laboratory
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Invertebrates of the Salish Sea

Calliostoma variegatum

provided by wikipedia EN

Calliostoma variegatum, common name the variable top shell, is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.[2]

Description

The height of the shell attains 25 mm. The small, conical shell is variegated. The nucleus is rosaceous. The six whorls are planate. The sutures are hardly impressed. The spire contains 3 regular, nodulous riblets, the nodules whitish, and subdistant. The interstices are very elegantly rosy. The base of the shell contains 8 lirulae. These are scarcely nodulous, and spotted with rosy.[3]

Distribution

This species occurs in the Pacific Ocean from Alaska to California, USA.

References

  1. ^ Carpenter, Proc. Acad. Nat. Sci. Phil., 1865, p. 61.
  2. ^ Rosenberg, G. (2012). Calliostoma variegatum Carpenter, 1864. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=580418 on 2012-12-07
  3. ^ Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia

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Calliostoma variegatum: Brief Summary

provided by wikipedia EN

Calliostoma variegatum, common name the variable top shell, is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.

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Distribution

provided by World Register of Marine Species
Gulf of Alaska East of Afognak Island, south to Isla Cedros, Baja California.

Reference

Tuskes P.M. & McGowan-Tuskes A. (2019). Calliostoma and Akoya of the Californian Marine Province (Gastropoda: Calliostomatidae). The Festivus. 51(1): 11-28.

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Bouchet, Philippe, P.