Figure 9: Octopus Supra-Oesophagal Central Nervous System: vtl: vertical lobe, svl: subvertical lobe, dbl: dorsal basal lobe, mbl: median basal lobe, oco: optic commissure, abl: anterior basal lobe, pbl: posterior buccal lobe, sbl: superior buccal lobe, mdf: median inferior frontal lobe, sfl: subfrontal lobe, msf: median superior frontal lobe, vsf: certical to superior frontal lobe. (Young J. , 1988)