CIRRHIPEDA—
FIRST ORDER.
"Class 10th. Cirrhipeda, contains two orders: the first, sessile, or placed upon some other body; the second, pedunculate, and fixed at the extremity of the pedicle to other substances.
"The class takes its name from the Cirrhi, or feathery tentacula. The genus Lepas only is contained in the Cirrhipeda class.
"1st Order. Shells Sessile.
Genera.
| Tubicinella. |  | All included in Lepas. |
| Coronula. | ||
| Balanus. | ||
| Acasta. | ||
| Creusia. | ||
| Pyrgoma. |
"The first genus contains but one species; the shell is buried up to its aperture in the skin and fat of whales.
"The second, Coronula, is found inserting itself in the sea-turtle, &c.