T. ocellata.

T. rapa. The turnip Turbinella.

Species fusiform and almost smooth.

T. scolymus. The artichoke Turbinella.

Species turbinated and spinous.

T. infundibulum. The funnel-shaped Turbinella.

Species turreted and fusiform.

T. pyrum. The pear-shaped Turbinella.

Species with spire short, mucronate; apex mammiliform, beak long; columella with four plaits; colour yellowish white, with irregular reddish brown spots.

4. Cancellaria. Twelve species.