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"Aesopus" cassandra (Hedley, 1904)

Description: Protoconch of 1 whorls, axially ribbed, with abrupt transition to spiral sculpture of teleoconch. Spire straight in outline; aperture shell length. Whorls sculptured with sharp, widely spaced spiral cords, 2-7 on penultimate whorl, with interspaces concave with axial growth lines. Outer lip thin, smooth, not thickened internally or externally. Columella smooth. Siphonal notch relatively broad. Shell translucent when fresh, uniformly white, partly covered with a thin brown periostracum.

Size: Up to 6 mm in length.

Distribution: Endemic to Australia; Low Isles, Queensland, southwards to southern Tasmania.

Habitat: Subtidal, down to 82 m, and in beach washup. Uncommon.

Comparison: Differs from A. pallidulus by a taller and narrower protoconch, shorter aperture and fewer spiral ribs.

Fig. 1: Twofold Bay, NSW, in 27-46 m (C.309259)


Copyright Des Beechey 2007