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Ataxocerithium eximium Houbrick, 1987

Description: Shell large,  very elongate and narrow, spire straight-sided, up to 19 whorls. Protoconch of 3 smooth whorls. Teleoconch whorls rounded, sculptured with 3 primary spiral cords per whorl crossed by stronger axial folds forming nodules at intersections; a finer spiral below upper suture and another at lower suture; sometimes secondary spirals between primaries on later whorls. Base with 2 or 3 spirals. Last whorl expanded over final one-third of whorl. Aperture nearly circular, outer lip flared, thickened internally; inner lip flared; anterior canal moderately long, tubular, upturned. Colour fawn with sutural zone and spirals on later whorls golden-brown, last whorl darker fawn.

Size: Up to 46 mm in length.

Distribution: Known from Clarence River, NSW, southwards to Ulladulla, NSW, in 300600 m.

Habitat: Continental slope. Moderately common.

Fig. 1: Off Kiama, NSW, in 450500 m. (C.316640)

 

Copyright Des Beechey 2016