This marine species occurs off New Zealand.

Small for genus (50-80 mm high), narrow and graceful, with long, almost parallel-sided last whorl, tapering very slightly to weakly defined neck, and wide, V-shaped anterior siphonal notch with rounded apex.

Surface almost smooth, apart from low but obvious axial costae on spire whorls, raised into very low nodules on a weak angulation at base of weakly concave sutural ramp; nodules are medial on spire whorls but sculpture fades out before last whorl of most large shells.

Aperture as in A. arabica, but collar never present on inner lip; 4 or 5 narrow plaits on columella. Protoconch small, 2-3 mm wide, otherwise as in A. arabica. Colour pattern of bright red-brown narrow zig-zag lines

“A.G. Beu and J.I. Raine (2009). Revised descriptions of New Zealand Cenozoic Mollusca from Beu and Maxwell (1990). GNS Science miscellaneous series no. 27.”