(Described as Trophon ambiguus) The fusiform shell is not very thick, usually with an umbilical chink, turriculate, reticulated by spiral and axial ribs.

The axial sculpture is formed by subequal sharp varices on the spire-whorls, very inequidistant and often almost obsolete on the body whorl.

The aperture is ovate, broadly angled above, produced below into a moderately long and open siphonal canal, which is recurved and bent to the left.

It forms a more or less thick callous layer on the concave parietal wall, and is narrowed below to a fine and sharp ridge.

Dentition: The central tooth is transverse, with 5 cusps, of which the median and externals are much larger, but all 5 are united at the base.