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

by G. B. Sowerby

03. S. Macandrei, F. and H.—Near Mizen Head, S. Ire., Rr. Turreted.

04. S. Jeffreysii, F. and H.—Brit. Channel, Rr. Discoid.

Chiton. Sedentary on rocks.

05. C. fascicularis, Linn.—Brit co. generally, Mc. Tufted margin, small, granules large.

06. C. gracilis, Jeffr. Ann. Nat. Hist., Jan. 1859.—Weymouth. Narrow; granules very small; two postero-terminal tufts.

07. C. discrepans, Brown.—crinitus, Pennant?—Tenby, Guernsey, C. Tufted margin, large: granules very small.

08. C. Hanleyi, Bean.—Scarborough, Skye, W. Ireland, R. Spinose margin.

09, 10. C. marmoreus, O. Fabr.—C. latus, Lowe, C. lævigatus, ruber, and pictus.—Scarborough, Forth, Skye, Zetland, W. Ire., R. Margin smooth.

11. C. lævis, Pennant.—C. marginatus, Pult., C. Achatina, Brown.—Dorset, Devon; Brit. co. generally, but rare. Dorsally elevated; margin reticulated.

12. C. ruber, Linn.—Brit, seas generally, Mr. Valves smooth; margin coriaceous.