Excerpt from Transactions of the American Entomological Society, Vol. 35 The genus Diplotaxis was erected by Kirby in 1840, tristis being the type species. Only three species of our fauna described by earlier authors are referable to the genus, viz.: the Mololontha liberta of Germar (1823), and the M. sordida and M. frondicola of Say (1825). A little later Blanchard (1850) and Burmeister (1855) described a considerable number of species from both the United States and Mexico, some of them being identical with previously described forms. In 1856 LeConte published his Sypsis of the Melolonthidae the United States, in which twenty-nine species are recognized, twenty-three of which are described as new, while five of the species of Blanchard and Burmeister are listed as unrecognized. This paper still furnishes the basis for the arrangement of species in our present lists, as, aside from some isolated descriptions, the genus has received attention from our systematists of later years. That such attention is much needed has for some time been apparent, for with the gradual accumulation of material from the West, especially from our Southwestern border region, the new forms have become as numerous as those previously described, and the total number of species does t fall far short of being as great as in Lachsterna. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art techlogy to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.