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

by G. B. Sowerby

08. C. rufescens, Forbes.—Odostomia and Turritella indistincta and scalaris.—Clyde, Hebrides, Oban, 15 to 50 fath., R. More stout than C. rufa. Three-banded.

09. C. scalaris, Philippi, (Melania.)—Exmouth, Guernsey, Medit., R. Ribbed; whorls angular above.

10. C. clathrata, Jeffreys.—Birterbuy Bay, R. Lower part of whorls spirally grooved between ribs.

11. C. indistincta, Mont. (Turbo.)—Odost., Turritella, Terebra, and Pyramis truncata and speciosa, etc.—Brit. co. generally, 5 to 40 fath., Mr.; S. Eu. Ribs curved, striated between.

Truncatella.

12. T. subcylindrica, Linn. (Helix.)—T. Montagui, Turbo truncatus, subtruncatus, Cyclostoma truncatulum, Turritella t. and s., etc.—Weymouth, S. Devon, Scarborough, etc., C.

Natica.

13. N. helicoides, Johnston.—Scotland, Scarborough, etc., 15 to 40 fath., R.; N. Eu. Thin-grooved suture.

14. N. montagui, Forbes.—Nerita rufa, Natica r. and rutilla.—Principally northern loc. In sand and gravel, 12 to 90 fath., Mr. Small, stout.

15. N. kingii, Forbes and Hanley.—Northumberland, unique, Jeffreys coll.