Excerpt from The Barnacles (Cirripedia) Contained in the Collections of the U. S. National Museum, Vol. 60 Exclusive of pelagic forms, the species of the Atlantic and Pacific coasts of the United States are distinct, with possibly one exception, but several of the Californian species are closely related to those of the Atlantic. From the very scanty data at hand it seems that the Antillean region is an area of specific differentiation, a number of very distinct specific types, not related to known Atlantic forms, occurring there. A com parison of this fauna with the Panamic will doubtless prove interest ing, but nothing is yet known of Panamic cirripedes. In the generic nomenclature I have been obliged to make various changes from the ordinary usage, yet only in cases where the univer sally accepted rules of priority have been transgressed. A few new generic and subgeneric terms are introduced, chiefly for groups nearly or quite unknown in the time of Darwin. The privilege of studying these barnacles I owe to Dr. Richard Rathbun, assistant secretary in charge of the United States National Museum. I am indebted also to Prof. G. O. Sars for the gift of examples of Scalpellum. Finally I must thank Miss Helen Winches ter for her careful work in drawing the illustrations for this paper. 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 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.