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

by G. B. Sowerby

22. A. testudinalis, Müller.—P. Clealandi.—North Ire., C. Oval, with tortoise-shell markings.

23. A. virginea, Müller.—P. parva, pulchella.—Brit. co. generally, Mc. Pale, pink-rayed, shallow.

Pilidium, or Tectura.

24. P. fulvum, Müller.—P. Forbesii.—Clyde, Cork, Zetland, etc., R.

Propilidium.

25. P. ancyloide, Forbes.—Lamlash, Ayrshire, etc., R.

Dentalium, Linn.

26. D. entalis, Linn.—Brit. co. generally, C. Smooth, small end notched.

27. D. tarentinum, Lamk.—D. vulgare, striatum, labiatum, politum, læve.—South coasts, C. Striated and entire at small end.

Pileopsis, or Capulus.