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Amblychilepas nigrita (Sowerby, 1834)

Description: Shell oval in outline, widest at centre; both ends raised. Apical opening central or slightly posterior. Sculptured with radial ribs crossed by concentric growth lines of about same spacing. Margin smooth and thickened internally; apical opening bordered with strong callus internally. Exterior colour very variable; fawn, brown, pink or black, with rays or concentric bands of lighter shade. Interior white in large specimens, fawn or grey in small shells.

Size: Up to 25 mm in length, commonly 10-13 mm.

Distribution: Endemic to Australia: Caloundra, Queensland, to Geraldton, WA, including Tasmania.

Habitat: Under rocks on exposed rocky shores from low tide down to about 70 m. Common.

Comparison: See A. javanicensis.

Fig. 1  Waratah Bay, Victoria (DLB3896)

Fig. 2  a. Gerringong, NSW (DLB3090) b. Batemans Bay, NSW (DLB5098) c. Narooma, NSW (DLB5095) d. Kiama, NSW (C.369626)


Copyright Des Beechey 2005