The following is a list of the Hemiptera present in the South African Museum collections and those described from the same region by other authors. The list comprises all the families of the Heteroptera and Homoptera, except the Jassidae, Aphidae, and Coccidae. The insects were mostly collected by members of the staff on the Museum Expeditions of 1916 (R. W. E. Tucker), 1918 (R. W. E. Tucker), 1919 (Lightfoot and J. Drury), 1921 (K. H. Barnard, J. Drury, and S. Gil man), and 1923 (K. H. Barnard and R. F. Lawrence). In addition, there are specimens obtained from private collectors, such as J. S. Brown, H. Kéchig, Dr. Knobel, Miss Wilman, and the well-known traveller Eriksson.