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Mesoginella
sinapi (Laseron, 1948) Diagnosis: Shell small, white or yellowish white, not strongly narrowed anteriorly; spire medium to high; aperture moderately narrow; lip smooth, moderately thickened internally, thickest centrally; external varix present; siphonal notch absent; posterior notch weak; ventral callus absent; columella with four strong plaits occupying half the aperture, 4th fold remote. Size: Adults 2.5 – 3 mm in length. Distribution: Australian
Museum Collection: Port Stephens and Comparison: This
is the smallest species in the genus. Fig. 1: Off Sow and Pigs Reef, Sydney Harbour (C.103360) |
