This beautiful greenish tinged Squirrel has been procured by Mr. G. J. A. Pool at the Stanley-falls, Congostate, in August 1905; Professor Dr. A. A. W. Hubrecht (Utrecht) had the kindness as to present it to our National Museum. It apparently is an animal belonging to a hitherto undescribed species; I describe it here under the specific title of the collector: Sciurus Poolii, n. sp. It is a wood-squirrel, known by the indigenes under the name Pania ya mti (Kiswahili-dialect), rather frequent, eaten by the Negros (observations made by Mr. Pool).