The climate-diagram maps contained in this volume are to serve for a quick orientation of the climate and its zonation in the various world regions, which are discussed in Volumes I-IX of this series. Some of these regional vegetation monographs are already published, others are still in preparation. The climate diagrams used in this volume are from the "Klimadiagramm-Weltatlas" by H. WALTER and H. LIETH, prepared with additional help of E. HARNICKELL (VEB Gustav-Fischer-Verlag, Jena 1960-1967). A few new climate-diagrams had to be drafted for Canada, Venezuela and Central Asia. On the maps, the individual climate-diagrams are placed, wherever possible, directly on the location of the station. However, in some cases the diagrams had to be shifted a little in order to accommodate as many as permitted by the geographic scale of the map. For coastal stations, it was best to move them onto the space provided by the ocean. Wherever diagrams were widely displaced, an arrow indicates the location of the station. The more exact location of each station is given in the "Klimadiagramm-Weltatlas", where the stations are shown with their respective number on the reverse side of each map. The number of climate-diagrams in the Atlas (approx. 8,000) is much greater than those that can be shown here. This volume is therefore not a substitute for the "Klimadiagramm-Weltatlas".