"The wheat straw-worm (Isosoma tritici), a minute, slender, yellow grub, which burrows inside the growing stem, dwarfing or blighting the forming head, was abundant throughout the winter wheat region of Southern Illinois, causing, in some places, a loss scarcely exceeded by that due to the Hessian Fly. Our breeding experiments demonstrate that this insect winters in the straw as larvæ or pupa, emerging as an adult fly early in spring, these flies laying their eggs upon the stems after they commence to joint. As the flies are very minute, and nearly all are wingless, their spread from field to field is slow, and it seems entirely within the power of the individual farmer to control this insect by burning or otherwise destroying the stubble in summer or autumn, and burning the surplus of the straw not fed to stock early in spring. A simple rotation of crops, devoting land previously in wheat to some other grain or to grass, will answer instead of burning the stubble. "The life history of the wheat bulb-worm (Meromyza Americana) was completed this year. The second or summer brood did decided injury to wheat in Fulton county, so many of the heads being killed that some of the fields looked gray at a little distance. This species was also injurious to rye, but much less so than to wheat. It certainly does not attack oats at all; fields of that grain raised where winter wheat had been destroyed by it, and plowed up, being entirely free from it, while wheat fields adjacent were badly damaged. We have good evidence that postponement of sowing to as late a date as possible prevents the ravages of this insect, in the same way as it does those of the Hessian Fly. "The common rose chafer (Macrodactylus subspinosus) greatly injured some fields of corn in Will county, the adult beetle devouring the leaves. "The 'flea negro-bug' (Thyreocoris pulicarius) was found injurious to wheat in Montgomery county, draining the sap from the heads before maturity, so that the kernel shriveled and ripened prematurely. In parts of some fields the crop was thus almost wholly destroyed.