Height 45 mm, breadth 27 mm. Shell thin, light with very low spires and large body whorl, fig-like in outline. Surface cancellated with slender spiral and axial cords, yellowish brown with spiral or axial rows of purplish brownish maculations. Aperture broad with an elongated siphonal canal. Radula of taenioglossate type; central trapezoid with 11 cusps, lateral with several cusps along the outer margin; marginals sickle-shaped.
Distribution:
San Sarvador, Bahia, Brazil and off Suriname.
Remarks:
This species is close to Australian F. tessellatus, but maculations are more densely distributed and much thinner.