Volvarina monilis
Volvarina monilis is a species of sea snail, a marine gastropod mollusk in the family Marginellidae, the margin snails.
Description
The length of the shell attains 11 mm.The shell is ivory-white. The columella is four-plaited; above the plaits are additional denticulations.
The African tribes form necklaces of these shells. For the purpose of stringing them a hole is made through the upper
part of the body-whorl, apparently by rubbing.