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Mitra cookii Sowerby, 1874

Description: Shell moderately light in weight, aperture about half of total shell length. Whorls sculptured with spiral threads, 4-10 on penultimate whorl and up to 40 on body whorl, but usually restricted to the top third of spire whorls with centre of body whorl smooth. Body whorl with up to 20 spiral grooves around the base. Outer lip convex, simple, columella with 4-5 plaits. Colour light brown to olive green with a white band around the centre of the body whorl, and axial white streaks descending from the suture.

Size: Up to 40 mm in length.

Distribution: Endemic to Australia; Caloundra, Queensland, to Shellharbour, NSW. Cernohorsky (1976) reports specimens from Port Lincoln and Yorke Peninsula, SA, but I know of no specimens from southern NSW or Victoria.

Habitat: Under rocks and in cryptic positions on rocky shores on the exposed coast, low tide and below. Uncommon.

Figs. 1,2: Minnie Waters, NSW (DLB4029)



Copyright Des Beechey 2003