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

by G. B. Sowerby

Crania.

24. C. anomala, Müller. (Patella.)—Pat. Anomia, Discina, and Criopus distorta, ostreoides, personata, and rostrata.—Zetland, Arran, Lerwick, Cork, Mr.

PLATE X.

Hyalæa. Fam. Pteropoda.

Fig.

01. H. trispinosa, Lesueur.—Once taken on floating timber, Dublin. Doubtful as British.

Spirialis, or Peracle. Fam. Pteropoda.

02. S. Flemingii, Forbes.—Fusus retroversus, Fl.—Zetland, Skye, Arran, Donegal, M. C. Snail-shaped.