Proctonotus is a genus of sea slugs, or more accurately nudibranchs, marine gastropod molluscs in the family Proctonotidae.WoRMS (2011). Proctonotus Alder & Hancock, 1844. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=138380 on 2011-04-12
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)
References
http://www.seaslugforum.net/ accessed 10 November 2009 Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 180–213