A description of the larva of Nubiolestes diotima (Schmidt) (Perilestidae) is given. Comments are also made on the larva of Pentaphlebia stahli Forster (Amphipterygidae) which was previously described by Fraser. The larvae of another zygopteran which inhabits the water-film on vertical rock-faces associated with waterfalls is described, and its probable determination as Stenocnemis pachystigma (Sel.) (Platycnemididae) is discussed. All of the material was collected in Cameroon (SW Province, Meme District, Mount Kupe).