Proctonotus

Proctonotus is a genus of sea slugs, or more accurately nudibranchs, marine gastropod molluscs in the family Proctonotidae.

Species
Species in the genus Proctonotus include:
 * Proctonotus mucroniferus (Alder & Hancock, 1844)
 * Species brought into synonymy :
 * Proctonotus affinis Burn, 1958: synonym of Caldukia affinis (Burn, 1958)
 * Proctonotus orientalis Kelaart, 1858 : synonym of Polybranchia orientalis (Kelaart, 1858)