In the two preceding papers of this series 36 species and 3 varieties of Acridiæ have been recorded as occurring in Indiana. Since the last paper, published in the Entomologist for February, 1892, appeared, five additional species have been taken within the State, and many lacts have been gathered concerning the life history, habits and range of the species previously recorded. Moreover, my private collection has been largely increased by exchange for specimens from other parts of the United States, and I have possessed myself of almost all the literature extant upon the group, so that I am enabled to clear up a few mistakes in synonymy rvhich crept into my first papers.