Lirularia yamadana

The ovate-conical, slightly perforate shell is dull whitish.

It is painted on the lirae with lilac-brown tessellations, somewhat formed into flammules.

The five whorls are convex, and separated by profound sutures, ridged by delicate spiral lirae articulated with lilac-brown (5 to 6 on penultimate, about 20 on the body whorl).

The pearly aperture is circular, equalling ½ the total length.

The elongate brownish-lilac spots on the lirations are situated somewhat irregularly underneath each other, so as to form flammulations.