Excerpt from Biologia Centrali-Americana, Vol. 3: Insecta; Diptera Volume includes the enumeration of the Families Syrphidae, Conopidae, Pipuncu lidw, and Platypezidae, contributed by Prof. S. W. Williston, the date of publication of his work extending from December 1891 to May 1892, the closing-up of the subject having been deferred till Vol. II. Was completed. As with the preceding Volumes, a list of the species described from Mexico or Central America by other authors during the progress of the work is appended, this list including only such as have been recorded since 1891. These have been mainly contributed by Dr. Giglio-tos; and as the date of publication of his paper is later by one month than that of the final instalment of Prof. Vvilliston's, the last-mentioned has priority in every case where the same species has been described by both authors. The two coloured Plates of Syrphidae and Conopidm have been prepared by Mr. Wilson, of Cambridge, from drawings made by Van der vvulp. 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.