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RISSOIDAE |
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Alvania (Linemera) filocincta Hedley & Petterd, 1906 Description: Shell relatively short and wide, spire convex. Protoconch of about 1 whorl, junction with teleoconch distinct. Teleoconch up to 4¼ strongly convex whorls. Axial ribs strong and widely spaced on early whorls, becoming weaker and more closely spaced on latter whorls, fading out on base of last whorl. Spiral threads cross axial cords, weaker than axials on early whorls, but about same strength on last whorl. Last whorl with 26-42 axial ribs and 10-12 spiral cords. Aperture ovate, with well-defined posterior canal; outer lip smooth internally, expanded and thickened with varix externally. Shell fawn, opaque. Size: Up to 4.0 mm in length. Distribution: Endemic to Australia: Sydney, NSW, southwards to Tasmania and then westwards to Port MacDonnell, South Australia. Habitat: Subtidal, down to 550 m. In Sydney Harbour, 11-18 m. Moderately common. Synonymy: None Fig. 1: 30 km SW of Cape Everard, Bass Strait, in 119 m (C.396268) Fig. 2: Original figure from Hedley & Petterd, 1906
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