PREFACE. The present volume completes the Old Series of the 'Trans- actions' and 'Proceedings' of the Essex Field Club, bringing up the reports to January 29th, 1887, after which date 'The Essex Naturalist' (the present organ of the Club) was com- menced. The Club was founded on January 10th, 1880, and its first publication was the Inaugural Address delivered by Mr. R. Meldola, on February 28th, 1880. This was published as a distinct pamphlet, and it also formed pp. 1-20 of Volume I. of 'The Transactions of the Epping Forest and County of Essex Naturalists' Field Club,' of which Part I. appeared in Septem- ber, 1880, and the following parts at irregular intervals. With Volume III. the shorter title of 'The Transactions of the Essex Field Club' was adopted, in accordance with the change in the title of the Club. In the first three volumes, the 'Transac- tions' and 'Proceedings' had but one title-page, although with distinct pagination ; but, in order to facilitate editing, it was resolved to separate them, and Volume IV. of the 'Trans- actions' and the present volume of 'Proceedings' were so issued. In January, 1887, however, the publications were finally combined in 'The Essex Naturalist.' the scope of which was indicated in a note inserted in Volume IV. of the 'Trans- actions.' Owing to various circumstances, pages lxxxi. and onward of the present volume were not actually published until 1892, and consequently in compiling them the Editor has frequently been enabled to make reference to papers, etc., issued after the dates of the particular meetings reported.