Eulithidium rubrilineatum

Eulithidium rubrilineatum, common name the red line pheasant, is an extremely small species of sea snail with a calcareous opercula, a marine gastropod mollusk in the family Phasianellidae, the pheasant snails.

Description
This very small shell grows to a height of 1.6 mm. The shell has a depressed turbinate shape. It contains 4-5 whorls. The umbilicus is only a small depression. The calcareous operculum has a white color. The shell shows about a dozen red, oblique spiral lines. The shoulders of the whorls are red with large white spots.

Distribution
This species occurs in the Pacific Ocean off California.