48 DIPTERA: D. A. Smith, 12 Tring Gardens, Harold Hill, Romford, RM3 9EP. MAMMALS: Mrs. F. Hughes, B.Sc, Ph.D., Westley Farm, Brent Pelham, Herts, SG9 OAU. REPTILES AND AMPHIBIANS: D. Scott, Court Hill, Church Lane, Little Leighs, Chelmsford, CM3 1PG. HETEROPTERA: P. Kirby, Ph.D., Natural Conservancy Council, Northminster House, Peterborough. SPIDERS: P. Harvey, 9 Kent Road, Grays, RM17 6DE. The Recorders compile and maintain detailed records of Essex fauna and flora, archaeology and geology. They welcome records from members which should include species, date of observation, location and, where possible, a six figure grid reference and any habitat or relevant ecological data. They will assist with identifications and answer queries on their subjects, but where a reply is necessary, please enclose a stamped, addressed envelope.