The cytoarchitectural pattern of the Archipallium of the African lung-fish Protopterus dolloi Boulenger has been studied by means of Golgi-Cox preparations. The Authors demonstrate that the whole Archipalleal area shows a homogeneous cytoarchitectural pattern made up through leptodendritic neurons, e.g. multipolars, intermediates and piriforms. A histological similarity results from the comparison between the Archipallium and the septum; nevertheless the histology of the septal area is more complex than the archipalleal one, because of the presence, in the first, of some neuropilar areas and associative bipolar neurons. This evidence emphasizes the greater relevance of subpallial formations in comparision with the pallial one in the Dipnoan forebrain.