1. Chang, J. T., et al., Acta Ent. Sinica (in the press).
2. Vanderzant, E. S., and Reiser, R., J. Econ. Ent., 49, 7 (1956).
3. Chang, J. T., and Wang, M. Y., Scientia, 11, 335 (1957).
4. Friend, W., and Patton, R. L., Canad. J. Zool., 34, 152 (1956).
5. Sedea, D. J. W., Acta Physiol. et Pharm. Neerl., 3, 262 (1954).