Alaginella brazieri (Smith, 1891)
Diagnosis: Shell medium in size, colourless transparent to opaque white, very strongly narrowed anteriorly; spire medium height; aperture moderately broad; lip slightly thickened internally, smooth, slightly flared posteriorly; external varix present; posterior notch weak; siphonal notch absent; columella with four strong plaits, the last three twice as high as thick, occupying slightly more than half the aperture.
Size: Up to 5 mm in length
brazieri is similar to A.
malina but is larger with a higher spire.
In A. brazieri the spire is almost straight sided, but in A.
malina the spire is concave, with the early whorls protruding
nipple-like from an almost flat spire.
The height of the lip also differs; in A.
brazieri it is relatively low, but in A.
malina it is often higher than the spire.
The habitat differs also; A.
brazieri occurs in very deep water, 210-914 metres, but A. malina is shallower, 36-315
Figs. 1,2: East of Broken Bay, NSW, in 914 metres (C.316001)
Copyright Des Beechey 2003