Xanthodaphne suffusa is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.

The columella is suffused with yellowish pink, the exterior white, with a thin, pale epidermis.

The spiral sculpture consists of fine threads, alternately larger and smaller, pretty uniform over the whole surface, with narrower interspaces.

The transverse sculpture consists of faint, irregular, sharp edged plications, strongest near the suture and on the obscure angle just in front of the fasciole, elsewhere nearly obsolete.

The body shows a thin glaze over a slightly excavated space.