horn-shell Cerithium vulgatum, an edible mollusc inhabiting a single shell which is shaped like an ice cream cone with its open end bent over sideways. Size up to 7 cm (2.5"); colour of the shell usually brownish or greenish; distribution, the Mediterranean and E. Atlantic coasts.

The name is also applied to some Indo-Pacific species belonging to different families, notably Cerithidea obtusa and Telescopium telescopium.

The Mediterranean horn-shell is eaten in a number of countries, and provides the basis for a special Italian soup, Zuppa di garagoli, in the Romagna.