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

by G. B. Sowerby

Puncturella.

03. P. Noachina, Linn. (Patella.)—Cemoria Flemingii, Fissurella N., Rimula Flemingii, etc.—Scotland and Northumberland, 20 to 100 fath., R. With slit under apex.

Emarginula.

04. E. reticulata, Sowerby.—Patella fissura, etc.—Brit. co. generally, C. Conical, with slit in margin.

05. E. rosea, Bell.—E. pileolus, conica, capuliformis, etc.—Channel Isls., Exmouth, Cornwall, etc., 7 to 25 fath., Mc. Curved, coarsely cancellated. Red within.

06. E. crassa, Sowerby.—Loch Fyne, Oban and Belfast, 20 to 25 fath., Rr. Large, not cancellated.

Haliotis, or "Ear-shell."

07. H. tuberculata, Leim.—H. vulgaris, Channel Isls., Cc.

Trochus.

08. T. zizyphinus, Linn.--C. conulus, C. discrepans, C. Lyonsii (white, ribbed var.), etc. Brit. co. generally, low-water to 50 fath., C.