Southern Periwinkle

Austrocochlea constricta Lamarck, 1822

Ribbed Top Shells are often referred to as Periwinkles, but they are not related to the European shells of this name. Other top shells in this genus also live in south-eastern Australia and have various striped and checked patterns. All of them are grazers, feeding on algae

The thick, solid shell is imperforate. Its color is a lusterless ashen or whitish, obscurely marked with black zigzag lines and stripes, or with spiral articulated zones or with spiral stripes of black. Sometimes it is nearly unicolored. The spire is conical with an acute apex. The about five whorls are convex. The first one is eroded, the penultimate is very strongly spirally tricostate. The body whorl has about seven strong carinae. The aperture is oblique. The outer and basal lips are either thick and multilirate within, or rather thin and slightly furrowed at the places of the principal carinae. The short columella is oblique, subdentate at its base and at the insertion spreading in a strong callus upon the parietal wall.


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What habitats does Austrocochlea constricta live in?

Lives intertidally on mud and among rocks, especially on sheltered shores.

What is the distribution of Austrocochlea constricta?

This marine species is endemic to Australia and occurs off New South Wales, South Australia, Tasmania, Victoria and Western Australia

How big does Austrocochlea constricta grow?

The height of the shell varies between 15 mm and 32 mm, its diameter between 22 mm and 28 mm.

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Provided by The Atlas of Living Australia
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Disclaimer: A lot of work goes into trying to identify and ensure accurate identifications are made and that the listed Descriptions, Sizes, Habitats and Distribution information is as accurate and valid as possible. Unfortunately, information in this arena is ever changing and as such no guarantee can be offered that it is correct or currently valid as a result the information is provided as a guide, and it is always suggested that you do a little research to ensure you have the latest and most accurate information. View the reference's or bibliography I welcome any feedback and comments on the information provided.

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