| Comparing the pedunculated and sessile Cirripedes, it is, I think, impossible to assign them a higher rank than that of Families. |
| The pedunculated Cirripedes are attached by a tubular tendinous process, called a peduncle. |
| Linnus, as is well known, included under this genus both the pedunculated and sessile Cirripedes. |
| On the males and complemental males of certain Cirripedes, and on rudimentary structures. |
