M. pulchellus.

M. aciculatus.

M. crassispina. The thick-spined Murex. Pl. [26], fig. 3.

Species with tube very long and spiny.

M. adustus. The burnt Murex. Pl. [26], fig. 1.

Species with three ramified varices.

M. Haustellum. The Snipe Murex. Pl. [26], fig. 4.

Species with tube very long, and without spines.

M. acanthopterus. The prickly Murex.

Species with three varices on each whorl.