Crassispira vexillum

Crassispira vexillum is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae.

Description
The length of the shell attains 11 mm.

The shell is closely ribbed, and with revolving ridges at the base. The color of the shell is yellowish, the lower half of the body-whorl, and a narrow lower portion of those of the spire chocolate-brown.

Distribution
This marine species occurs off Barbuda and St. Vincent