Lodderia coatsiana is a species of sea snail, a marine gastropod mollusk in the family Skeneidae.

[1] The height of the shell attains 2.25 mm.

This is a small, solid, white shell with a deep umbilicus, elegantly sculptured.

The two others are aequicostate with smooth, thickened, subflexuous ribs.

[2] This marine species occurs in the Magellanic Strait off Argentina at a depth of about 100 m.