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Laemodonta typica (H. & A. Adams, 1854)

Description: Shell thick and solid, aperture about 50% of total shell length. Spire weakly convex in outline. Shell sculptured with coarse, finely nodulose spiral cords. Aperture narrow, inner lip of aperture with 3 strong folds, parietal wall with thick callus. Outer lip with 2 strong folds internally, thickened by strong varix externally. Umbilicus wide, with external sculpture continuing into it. Colour fawn or pinkish fawn.

Size: Up to 7 mm in length.

Distribution: Tropical Indo-West Pacific. In eastern Australia, as far south as Sydney.

Habitat: Under stones among mangroves and in oyster clusters in the mid-littoral zone in harbours and estuaries (Shea, 1991; Ponder, Clark& Dallwitz, 2000).

Remarks: A photograph of the live animal is given by Denis Riek at http://www.roboastra.com/Mollusc5/brpr185.html

One of Riek's figures is reproduced here as Fig. 2.

Fig. 1: Double Bay, Port Jackson, NSW (C.55109).

Fig. 2: Brunswick River, NSW. Image copyright Denis Riek, 2013.


Copyright Des Beechey 8 June 2018