Excerpt from Revision of the Stenini of America North of Mexico: Insects of the Family Staphylinidae, Order ColeopteraProthorax usually more or less elongated, always strongly convex and sometimes sub-cylindrical, often longitudinally canaliculated, and more or less tuberculate at the base.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology 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.