Illustrated Index of British Shells / Containing figures of all the recent species

by G. B. Sowerby

29. E. clavula, Lovén (Turbonilla.)—Odostomia c.—Torbay, Rr. Guernsey.

30. E. obeliscus, Jeffreys, Ann. Nat. Hist. Jan. 1858.—Shetland.

PLATE XV.

Turritella.

Fig.

01. T. cornea, Lamk.—T. communis, var., B. M.—Cork and Zetland, Mr. Whorls less flat and less rapidly enlarged than T. communis. A white var. exists (T. nivea).

02, 3. T. communis, Risso.—T. cornea?, T. Terebra.—Brit. co. generally; 4 to 100 fath., Cc. Aperture rather square.

Aporrhais.