This beautiful squirrel is oue of the recent discoveries made in Liberia by our diligent travellers, Büttikofer and Sala. It is at once distinguished from the other hitherto described species found in Africa by a broad black band, running from the neck to the tail along the middle of the back and by its tail being black on the upper parts and not ringed as in nearly all the other African squirrels. As the fur is soft to the touch it finds its place among the true Sciuri. In external appearance it agrees with the species of a group of which I would regard Sc. rufobrachiatus as the type, but it differs by presenting 5/4 molars and not 4/4. Moreover in Sc. rufobrachiatus and maculatus the upper incisors are longitudinally grooved and this is not the case in our new species.