Hancockia is a genus of nudibranchs, shell-less marine gastropod mollusks or sea slugs, in the family Hancockiidae.Gofas, S. (2004). Hancockia Gosse, 1877. In: MolluscaBase (2016). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=138057 on 2016-05-21
Species Hancockia burni Thompson, 1972 Hancockia californica MacFarland, 1923 Hancockia papillata (O'Donoghue, 1932) Hancockia ryrca Er. Marcus, 1957 Hancockia schoeferti Schrödl, 1999 Hancockia uncinata (Hesse, 1872) Species brought into synonymy Hancockia eudactylota Gosse, 1877: synonym of Hancockia uncinata (Hesse, 1872)
References
Gosse P. H., 1877: On Hancockia eudactylota, a genus and species of mollusks supposed to be new ; Annals and Magazine of Natural History (4) 20: 316-319 Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca. in: Costello, M.J. et al. (eds), European Register of Marine Species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Patrimoines Naturels. 50: 180-213