558 specimens, 254 forms. Paper on an expedition undertaken during the summer of 1930, with description of route and comments on birds within specific rainfall belts (Namibia and Botswana) The author notes that on their arrival at Lake Ngami 30 July 1930 the lake was as dry as Includes annotated systematic list of birds collected (which includes a male Tractrac Chat procured near Kalkfontein on 14 June), illustrations and photographs of habitats.