Environment Amaea ferminiana is a species of predatory sea snails, marine prosobranch gastropod mollusks in the family Epitoniidae.

(Original description) The shell is large, solid, and acute, with eleven or more closely adherent whorls.

The axial sculpture consists of numerous low, small, sharp lamellae, which are slightly more prominent before the suture on the last two whorls.

The basal disk is similarly covered with closely set, very fine spiral threads, with the suture positioned along its posterior margin.

The aperture is rounded and slightly patulous in line with the axis, and in fully mature shells, a thick, white varicose peritreme is bevelled away from the aperture towards the thicker portion of the varix behind.