(Original description by Carpenter) This beautiful little species is the first known from America.

It looks like a Velutina crossed by sharp ribs in the direction of the slanting mouth.

It then assumes its normal sculpture, but there is nearly a whorl before there is any trace of incision.

A band, marked off by ten transverse ribs showing stages of growth, encircles the shell as far as the hole, which is long and somewhat rectangular; but there is no band between the hole and the outer lip.

[4] This species occurs in the Pacific Ocean from California, USA to Chile; off the Galápagos Islands.