Cantharidus dilatatus

Its sculpture consistis of numerous fine and inconspicuous spiral striae, more distinct and a little further apart on the base.

Sometimes a broad dark-brown band encircling the periphery of the whorls, and one on the centre of the base.

The protoconch is very small, consisting of 1½ smooth, slightly convex whorls.

The aperture is subrotund, oblique, inside mostly highly bluish-reddish iridescent and finely lirate.

[2] This marine species is endemic to New Zealand and occurs off the North, South, Stewart and Chatham Islands.