Hoverflies: R Payne M. Sc, M.I. Biol., Southend Central Museum, Victoria Avenue, Southend-on-Sea. Telephone: (01702) 330214. Mammals: J.P. Wright, 136 Oakleigh Park Drive, Leigh-on-Sea SS9 1RU. Telephone: (01702) 78409. Bats: J. Dobson, 16 The Westerings, Bicknacre, Chelmsford CM2 8JE. Telephone: (01245) 224408. Reptiles and Amphibians: D. Scott, Court Hill, Church Lane, Little Leighs, Chelmford CM3 1PG. Telephone:(01245) 36475. Hymenoptera, Spiders and Woodlice: P. Harvey, 9 Kent Road, Grays RM 17 6DE. Telephone: (01375) 371571. Heteroptera: P. Kirby Ph.D., 49 Bamstock, Bretton, Peterborough, Cambridgeshire PE3 8EH. Geology: G. Ward B.Sc, Dip. Geochem, F.G.S., 76 Hunter Avenue, Shenfield, Brentwood, Essex, CM 15 8PG. Telephone: (01277)218473. The recorders compile and maintain detailed records of Essex fauna and flora 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 also assist with identifications and answer queries on their subjects but where a reply is nessary please enclose a stamped addressed envelope. 56