London: British Ornithologists' Union, 1930. Supplementary Number of The Ibis, Twelfth Series, Volume VI. Text volume (673 pp.) and plate volume (20 color plates, many folding) bound together in red cloth The cisticola form a bewilderingly large genus of Old World warblers, principally of African distribution. Lynnesís monograph with meticulous color pates still provides the framework for cisticola systematics.