Aristofusus couei
Aristofusus couei, common name the Yucatan spindle, is a species of sea snail, a marine gastropod mollusk in the family Fasciolariidae, the spindle snails, the tulip snails and their allies.
Description
The length of the shell attains 104 mm, its diameter 24 mm.The shell is fusiform, solid, and relatively heavy, with a white coloration covered by a straw-colored periostracum. It is regularly sculptured with spiral grooves.
The spire comprises eleven to twelve ventricose whorls. The upper whorls are characterized by nodular axial folds.
The aperture is sub-circular. The columella is nearly straight and is coated with a white callus. This callus is translucent enough to reveal the internal projections corresponding to the exterior spiral sculpture.
The siphonal canal accounts for approximately half of the shell's total length. It is slightly open along its entire length and is recurved posteriorly at its distal end.