Vol. 28, Part 4 March 1950 THE ESSEX NATURALIST being the Journal of the ESSEX FIELD CLUB Editor : C. BIGNELL PRATT CONTENTS PAGE Of Field Clubs and, in particular, The Essex Field Club. By Frank W. Jane ..................... 161 Evidence for a Neolithic Trackway in Essex. By E. A. and E. L. Rudge. With two plates .................. 172 British Harvest-Spiders. By J. H. P. Sankey. With two plates. ... 181 Mycetozoa in Epping Forest in 1948-49. By Joseph Ross ...... 191 The Man Orchis in Essex. By Bernard T. Ward ......... 193 Flowers in Essex. By Peter Long ............... 194 The published papers of D. J. Scourfield ............ 195 Notes and Observations : The Essex Bird Watching and Preservation Society ...... 198 Birds ........................... 198 Fishes ........................... 207 Insects........................... 209 Obituary Notices : Miss G. Lister, C. E. Gourley, D. J. Scourfield ... 214 The Essex Field Club : Report of Council for 1948-49 ...... 217 Report of Council for 1949-50 ...... 218 Reports of Meetings ............ 220 Published by The Essex Field Club at the Essex Museum of Natural History, Romford Road, Stratford, London, E.15.