- Aspergillum Javanum.
- A. vaginiferum.
- A. Novæ Zælandiæ.
- A. agglutinans.
2. Genus Clavagella. Pl. [VI].
Animal. Unknown.
Shell. A tubular sheath, testaceous, attenuated, and open before; terminating posteriorly in an oval, sub-compressed club, roughened by spiniform tubes—one valve fixed in the side of the club, the other free in the tube. Inhabits the Indian seas. Four species.
- Clavagella aperta.
- C. cristata.
- C. tibialis.
- C. Brocchii.
3. Genus Fistulana. Pl. [VI].
Animal. Provided with two protuberant calcareous tubes, covering parts of its body at the open end of the tube, each of which is terminated with from five to eight cup-shaped calcareous or corneous appendages. It inhabits the sand, and perforates wood, stones, and sometimes shells.
Shell. Lamarck asserts that the tube and shell of this genus are quite distinct. They have the shell free and detached within the sheath, and neither of the valves fixed into the partition of the tube, which is most generally testaceous, closed, and retort-shaped at the posterior extremity. Inhabits the Indian seas. Four species.
- Fistulana clava.
- F. corniformis.
- F. gregata.
- F. lagenula.