Famelica catharinae is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.

The part below the carina of the shoulder is flattened and nearly straight, or even narrowed toward the suture, and crossed by regularly spaced, thin, elevated transverse ribs, with wider intervals.

The aperture is very elongated and narrowed at the base of the siphonal canal, which is much prolonged and slender, a little curved, owing to a slight sinuous curvature of the columella-margin.

The subsutural band, corresponding to it, shows faint cm'ved lines of growth, parallel with its margin.

[2] F. catharinae can be found in Atlantic waters, ranging from the coast of Massachusetts south to Florida.