Calliostoma koma

Calliostoma koma is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.

Some authors place this taxon in the subgenus Calliostoma (Tristichotrochus)

Description
The size of the shell varies between 18 mm and 30 mm.

Distribution
This marine species occurs off Taiwan, Southern Japan; in the East China Sea and the Yellow Sea.