Habitat ad fretum Magellanicum (Cape Gregory). Mus. Brit., nost., Brod.
55. Turritella tricarinata.
T. testâ turritâ, anfractibus tricarinatis; carinis nodulosis; long. 1⅝; lat. 9⁄16 paulo minus; poll.
Habitat ad oras Americæ meridionalis (Valparaiso). Mus. Brit., nost., Brod.
The Carinæ are nodulous, or twisted like the strands of a rope; the twists of the upper carina are in the direction of a water-laid,
or right-handed rope, and those of the two lower carinæ are in the opposite direction, or like what is termed a hawser-laid rope. Between these nodulous carinæ are elevated lines, and the base is very strongly striated. Found in deep water in the Bay of Valparaiso. Dead shells of this species are occasionally found thrown upon the beach, near the Almendral.
56. Turritella nodulosa.
T. testâ elongato-turritâ; anfractibus striatis; striis duabus maximis subnodulosis; long. 111⁄16; lat. 7⁄16 fere; poll.
Habitat? Mus. Brit., nost.
The two large striæ, which are remarkable for the nodules, are not far from the middle of each whorl, and generally are nearer the upper suture: of these the lowest is the largest.