1. Lloyd, J. H., Anti-Locust Bull., No. 35, 65 pp. (1959).
2. Scheepers, C. C., and Gunn, D. L., Bull. Ent. Res., 49, 273 (1958).
3. Nicholson, A. J., Rep. Austral. N.Z. Ass. Adv. Sci., 26, 134 (1947).
4. Cole, L. C., Proc. Tenth Int. Congr. Ent. Montreal 1956, 2, 639 (1958).
5. Gunn, D. L., N. Rhod. J., 2, 3 (1955).