The African Tridactyloidea, especially from the southern parts of this continent (Madagascar included), are studied and revised with taxonomical and faunistical point of view. 41 species are found out. They belong to 6 genera: Tridactylus (3), Asiotridactylusgen. n. (2), Afrotridactylus (7), Xya (23), Paratridactylus (1) and Bruntridactylus (5). The genus Asiotridactylusgen. n., 11 species (Tridactylus angustussp. n., Asiotridactylus aethiopicussp. n., Bruntridactylus katangensissp. n., Xya albiantennatasp. n., albigenatasp. n., X. atrasp. n., X. aurantipessp. n., X. pronotovirgatasp. n., X. elytromaculatasp. n., X. tumbaensissp. n., X. uamensissp. n., X. univenatasp. n.) and a subspecies (Xya capensis albilobatassp. n.) are described new to science. Diagnoses with illustrations and keys for the determination of all african species are included. Supplementary redescriptions are added to several species hitherto known incompletely. Southern to the 15th degree of latitude S are recorded 4 genera and 16 species only: Tridactylus (2), Afrotridactylus (4), Xya (9) and Bruntridactylus (1). Many contributions to the distribution of the species are given.