Cosmetalepas concatenatus (Crosse & Fischer, 1864)
Description: Shell low, almost oval in outline, ends not raised; apical opening almost centrally placed. Sculptured with irregularly placed, close packed minute pits over entire surface; axial and concentric sculpture absent. Margin smooth, slightly thickened internally; apical opening bordered with callus internally. Exterior and interior colour white or cream.
Size: Up to 20 mm in length, commonly 10-15 mm.
Distribution: Endemic to Australia: Southern Queensland to south-western WA, including Tasmania.
Habitat: Under rocks on rocky shores at low tide level and below. Uncommon in NSW.
Comparison: See Amblychilepas javanicensis
Fig. 1 Manly Beach, NSW (C.370493)
Copyright Des Beechey 2005