In this article the author proposes some addenda to his own recently published monograph on Filippo Napoletano (1589-1629). First, he presents a pair of unpublished landscapes attributable to Filippo. That they must belong to the painter’s first period of activity in Rome is shown by their subject matter. For they are characterized not only by the clear and emphatic presence of features of the Roman Campagna, but also by specific urban monuments, here transposed to a rural setting, such as the so-called Temple of Minerva Medica or the fountain of Giacomo della Porta then in the Campo Vaccino. Assignable to his subsequent period in Florence, instead, are two small paintings on slate, the one with a scene of witchcraft, the other of the infernal regions. These too can be securely attributed to Filippo Napoletano. Lastly the author furnishes a list of emendations and additions that integrate the painter’s corpus.