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Bulla angasi Pilsbry, 1893

Description: Shell moderate in size and weight, approaching cylindrical, spire with narrow, deep umbilicus. Surface smooth apart from irregular growth lines; no spiral grooves on base. Aperture narrow at top, broadening out anteriorly. Outer lip sharp, weakly convex in profile. Parietal callus white, thin, flaky, often absent. Colour mottled purplish brown.

Size: Up to 25 mm in NSW.

Distribution: Willan (1978) gave the distribution as a region in the south-west Pacific. The Australian Museum holds specimens from NSW as far south as Sydney, northern New Zealand, New Caledonia, Norfolk Island, Lord Howe Island, and Coral Sea.

Habitat: Apparently lives subtidally. Found occasionally in beach washup in NSW.

Comparison: This species differs from B. quoyii, the more common Bulla species in NSW, by having a more cylindrical shell, a narrower umbilicus in the spire, and not having spiral groves at the base.

Synonymy: Malaquias & Reid (2008) regarded this species as a synonym of Bulla vernicosa, Gould, 1859.

Fig. 1: Long Reef, Collaroy, NSW (C.107535)


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