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

by G. B. Sowerby

Fig.

01. O. unidentata, Mont. (Turbo.)—Voluta u., O. plicata.—Brit. co. generally, Mc. Rather conical. Tooth strong; no epidermis.

02. O. turrita, Hanley, Brit. Mar. Conch.—O. unidentata, var. B. M.—R. More lengthened than No. 1.

03, 4. O. acuta, Jeffreys.—Torbay, Loch Fyne, Galway, etc., Mc. Strong, conical. Suture deep.

05. O. plicata, Mont. (Turbo.)—Voluta p., V. plicatula, O. Annæ, Jaminia p., etc., Mc.—Salcombe, Swansea, Dublin, Aberdeen, Mc. Turreted. Narrow, thin.

06. O. insculpta, Mont. (Turbo.)—Voluta, Jaminia, and O. ins.—S. Devon, Oban, Hebrides, etc., R. Conical, spirally striated.

07. O. pallida, Mont. (Turbo.)—Vol., Cingula, Phasianella p., O. ambigua.—S. Devon, Rr. Broad. Thin, pillar straight.

08. O. conoidea, Brock.—Turbo, Odost., etc.—N. Scotland, Mc. S. Devon, Mr. N. and S. Eu. White. Whorls straight; throat striated.

09. O. conspicua, Alder.—Isl. Man, Whitburn, Herm. Coloured. Whorls rounded; throat striated.

10. O. truncatula, Jeffreys.—Plymouth. Elongated.