1. Regan, C. T., Proc. Zool. Soc. Lond., 157 (1922).
2. Worthington, E. B., Rep. Fisheries Uganda (London, 1932).
3. Graham, M., Rep. Fish. Survey L. Victoria (London, 1929).
4. Wayland, E. J., Summary Progress Geol. Survey Uganda (Entebbe 1931).
5. Trewavas, E., J. Linn. Soc. Lond., 38, 309 (1933).