Tonna sulcosa

[3][4] These medium-sized shells are quite strong, oval-globose, with 4 -5 moderately convex turns and flat ridges.

The aperture is large, semi-circular, with reflected lip and long, sharp teeth.

Its ground color is whitish, with four or five distinct bands of a reddish fawn-color, rarely continued to the outer lip.

The spire is brown at top, and is formed of six convex whorls, encircled by projecting, pretty narrow, equal, approximate, flattened ribs, a little more distant towards the upper part..They are separated by shallow furrows.

[2][7][3][4] These benthic gastropods live on sandy bottoms in tropical environment at depths of 10 to 70 m.[4] Embryos develop into free-swimming planktonic marine larvae (trochophore) and later into juvenile veligers.

A shell of Tonna sulcosa