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CERITHIOPSIDAE |
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Joculator gracilis Laseron, 1951 Description: Shell small for the family, spire strongly convex, last whorl constricted, greatest width at penultimate whorl. Protoconch of 4 whorls, smooth. Teleoconch of up to 6 nearly straight sided whorls with impressed suture; whorls with 3 spiral cords crossed by weaker axial ribs, forming strong nodules at intersections. Last whorl with undulating, unbeaded cord level with top of aperture; base weakly concave with a weaker broad, low spiral cord. Outer lip of aperture expanded, thin; inner lip heavily calloused. Anterior canal a deep U-shaped notch. Colour mid-brown. Size: Up to 2.4 mm in length. Distribution: Syntypes from Dolls Point, Georges River, NSW, in 8 fathoms (14 m). Additional material available (7 lots): Dolls Point, Georges River; Little Coogee Bay; off Nelson Head 15-18 m; Bottle & Glass Rocks, Sydney Harbour; off Bottle & Glass Rocks; south west of Solitary Is. in 15 m; Queenscliffe, Port Phillip, Victoria Habitat: Shallow subtidal. Laseron (1951) reported it as "Not uncommon". Fig. 1: Dolls Point, Georges River, Sydney. (C.102701 SYNTYPE 1, protoconch broken) Fig. 2: Dolls Point, Georges River, Sydney. (C.102701 SYNTYPE 2) Protoconch |
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