Carychium, [XXII.] 8.

Cæcum, [XV.] 6-7.

Cemoria, Puncturella.

Ceratisolen, [II.] 11.

Cerithiopsis, [XV.] 11-15.

Cerithium, [XV.] 8-10.

Chemnitzia, [XVI.] 1-11.

Chiton, [X.] 5-17.

Circe, [V.] 2.

Clavatula, Mangelia.