Kermia brunnea is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.
The length of the shell attains 5 mm.
(Original description) The fusiformly elongate shell is ornamented with transverse granular ribs, and fine longitudinal raised striae. The whorls are slightly convex. The aperture is elongate-oval. The siphonal canal is short. The colour of the shell is dark brown. [1]
This marine shell occurs off Hawaii.