Liotia atomus is a species of small sea snail, a marine gastropod mollusk, in the family Liotiidae.[2]
The diameter of the shell is 1.5 mm. The somewhat solid shell is narrowly umbilicated. It is greenish and a little shining. It is obliquely longitudinally striate. The 4½ slightly convex whorls enlarge rapidly. The body whorl is subangulated at the base. The umbilical area is longitudinally crispate. The continuous peristome is thickened.[3]
This marine species occurs off Suez, Red Sea.