Shell fusiform, spirally striated; aperture with a moderate canal; columella plicated as in Fasciolaria. (Tryon, Manual of Conchology.)
The shell of this genus unites the form of a Sipho with the folds of a Fasciolaria; its small size, color, and northern habitat will distinguish it from the latter, even without taking into account the very diverse dentation ; yet without the latter difference it would scarcely have been advis¬able to have separated the single species upon which the genus was founded from Fasciolaria. (Tryon, Structural and Systematic Conchology.)
TYPE. F. ligatus Mighels and Adams.
DISTRIBUTION. Boreal Atlantic and Pacific.