Paleogene Verrucidae (Cirripedia: Verrucomorpha) of North America, with descriptions of three new species.

In North America, Paleogene Verrucidae are rarely encountered. Only a single named species has been previously discussed by Zullo Baum (1979), who provisionally assigned a Palaeocene form from North Carolina to Verruca rocana Steinmann, 1921. Eocene deposits in Washington State (USA) have now yielded two new species from intertidal to shallow water environments: Verruca gailgoedertae sp. nov. from the middle Eocene Crescent/McIntosh transition zone, and Verruca sorrellae sp. nov. from the upper Eocene to lowest Oligocene Gries Ranch and basal Lincoln Creek formations. Both species are characterized by punctate shell plates, and are placed in the lineage of Verruca stroemia (O.F. Müller, 1776). In Alabama, marls from the upper Yazoo Formation (Pachuta and Shubuta Members) have yielded Verruca alabamensis sp. nov., an uncommon deeper water form associated with abundant brachiopods and phosphate deposition. This last species shows no development of punctae and is not related to the lineage that leads directly to Verruca stroemia.

Acasta sulcata akanthosa, new replacement name for Acasta sulcata spinosa.

Acasta sulcata spinosa Daniel, 1955 has been discovered to be a junior homonym of Acasta spinosa Hiro, 1939. As both names were originally described in the genus Acasta, ICZN (International Commission on Zoological Nomenclature) Article 57.2 defines A. sulcata spinosa as a primary junior homonym, even though it is of subspecific nature.

On the authorship of Austromegabalanus psittacus (Molina).

Austromegabalanus psittacus is a large, common and economically important shoreline barnacle species of the west coast of South America. It was originally described by Juan Ignacio Molina as Lepas psittacus, but some confusion has arisen as to the exact reference to and year of publication of this species.