Shell solid, yellowish white, subfusiform: whorls five, rounded, including a large protoconch of two rounded polished whorls; the other whorls strongly ribbed by distant curved ribs, about 12 on the spire; on the body whorl they disappear above the middle. The whole shell is girt by numerous irregularly spaced impressed lines, which pass over the ribs. Mouth elongate, oval, with no contraction for a canal; outer lip thin, curved, with a moderate sinus at the suture, which bends the ribs; columella straight.Length, 5.3 m.m.; breadth, 2.5 m.m.

A shell of simple character, most nearly related to M. delicatula Ten. Woods, the sculpture of which is similar, but is easily separable by its few whorls and the very different apex.

Australia,Tasmania. 3 miles East of Schouten Island.