REFERENCES
- Clarke, J. E. (1965). Trypanosome infections in the mouthparts of Glossina morsitans Westw.: a correlation between extent of labral infection and invasion of the hypopharynx. Ann. trop. Med. Parasit., 59, 235.
- Harley, J. M. B. (1965). Seasonal variations in age and infection rates of Glossina fuscipes. Rep. 10th Meet. int. scient. Comm. Trypanosom., Kampala, 1964, 91.
- Jackson, C. H. N. (1946). An artificially isolated generation of tsetse flies (Diptera). Bull. ent. Res., 37, 291.
- Jordan, A. M. (1964). Trypanosome infection rates in Glossina morsitans submorsitans Newst. in Northern Nigeria. Ibid., 55, 219.
- Lloyd, Ll., and Johnson, W. B. (1924). The trypanosome infections of tsetse-flies in Northern Nigeria and a new method of estimation. Ibid., 14, 265.
- Lloyd, Ll., and Johnson, W. B. Young, W. A., and Morrison, H. (1924). Second report of the tsetse-fly investigation in the northern provinces of Nigeria. Ibid., 15, 1.
- Simmonds, A. M., and Leggate, B. M. (1962). A survey method of trypanosome infections in Glossina. Nature, Lond., 194, 1297.
- Squire, F. A. (1951). Seasonal variation in the incidence of Trypanosoma vivax in Glossina palpalis (R.-D.). Bull. ent. Res., 42, 371.
- Wenyon, C. M. (1926). Protozoology: a manual for medical men, veterinarians and zoologists, vol. 1. Lond.: Baillière, Tindall and Cox.
- Wijers, D. J. B. (1958). Factors that may influence the infection rate of Glossina palpalis with Trypanosoma gambiense. I: The age of the fly at the time of the infected feed. Ann. trop. Med. Parasit., 52, 385.