The Chromodorididae (Opisthobranchia: Mollusca) of the Indo-West Pacific: Noumea flava colour group

Six species of the genus Noumea are described including four new species. All species are yellow, and four have orange markings as well; one has a white mantle border and the last has red gills and rhinophores. Noumea flava has a widespread distribution in the Indo-West Pacific and two other species are known from the tropical Pacific. The other three species, including a yellow colour form of Noumea haliclona (Burn, 1957), are reported from southern Australia. Aspects of the reproductive system of some species of Noumea strongly indicate that the genus Verconia Pruvot-Fol, 1931 is closely related to that genus.