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Magnosinister hedleyi Laseron, 1954

Description: Shell moderately large, sinistral. Protoconch lecithotrophic, of 2-3 whorls, with 2 spiral cords. Teleoconch whorls straight-sided with 4 beaded spiral cords and numerous weak axial costae; spirals 1-4 start immediately after protoconch; spiral 4 entirely exposed on all whorls; spirals 1 and 2 similar strength, spirals 3 and 4 strongest. Another spiral  on base (numbered 5), weakly undulate. Axial costae number 26-28 on penultimate whorl. Outer lip of aperture flared, anterior siphonal canal moderate length. Colour buff-white, sparsely and irregularly spotted and maculated with yellowish brown; darker between nodules. (Red markings on last whorl appear to be ballpoint pen). 

Size: Adult specimens 14 to 22 mm (estimated - spire broken) in length.

Distribution: Endemic to Australia; Angourie, NSW, southwards to Furneaux Islands, in Bass Strait.

Habitat: All specimens are from beach washup, except one from 37-40 m off Long Bay, Sydney. Very uncommon.

Comparison: This species stands out because of its large size and distinctive colouration.

Figs. 1, 2:  Woolgoolga, NSW (C.116191). Protoconch and upper teleoconch whorls missing. Red markings on last whorl appear to be ballpoint pen). 


Copyright Des Beechey 2015