Cirripedia

Two different cirripede nauplii were recorded from the harbour, but neither could be identified. A large sized species (Text-fig. 4, B) occurred for three months in the spring (August to October), but it was never abundant except in September (Text-fig. 7). Other much smaller nauplii and metanauplii, probably of two species, occurred both in spring and autumn, but never in quantity.

In Europe cirripede larvae occur with explosive outburst in the spring at the time of diatom increase (Pyefinch, 1948, 1949; Barnes, H., 1950, 1957). Dakin and Golefax (1933) recorded little seasonal fluctuation for Australia, and no great spring abundance has been noted for Wellington Harbour. It would appear therefore, that this group does not form the striking planktonic landmark in the spring in the South Pacific as it does in Europe.