ABSTRACT
In the genus Alcippe, and in Cryptophialus, the whole of the external membranes are moulted, excepting the surface of attachment; but then these cirripedes live in cavities which they form for themselves, and are thus protected. In Lithotrya the membrane of the peduncle, with its little valves or scales, is moulted, but here, again, this very part is protected by the tubular cavity, which the animal forms and inhabits. None of these three genera belong to the Balanidae, or sessile cirripedes. In Coronula and its close allies, there are some small teeth intermediate between the four or five main teeth; and in these genera, though members of the subfamily Balaninae, the lower teeth exhibit only rudiments of being laterally double. Male organs all the cirripedes of the family are bisexual or hermaphrodite; and no instance has been observed of the presence of males or complemental males.
