Agathotoma ordinaria
Agathotoma ordinaria is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.
Description
The length of the shell attains 7.5 mm, its diameter 2.5 mm.The turreted shell has an oblong shape and contains 7 whorls, with the first two being smooth and convex. The subsequent whorls are also convex and feature 10-11 ribs that subtly blend into the background and are adorned with spiral lirae. The aperture is narrow, measuring about 2/5 of the total length of the shell. The white outer lip is thickened and slightly sinuate at the top. The siphonal canal is short and narrow, while the columella is simple.