British Journal of Entomology and Natural History is published by the British 

 Entomological and Natural History Society, Dinton Pastures Country Park, Davis 

 Street, Hurst, Reading, Berkshire RG10 OTH, UK. Tel: 0734-321402. The 

 journal is distributed free to BENHS members. 



Editor: Richard A. Jones, B.SC, F.R.E.S., F.L.S. 

 13 Bell wood Road 



Nunhead 

 London SE15 3DE 

 (Tel: 071 732 2440) 



Editorial advisory panel: 



Rev. D.J.L. Agassiz, M.A. 



R.D.G. Barrington, B.Sc. 



E.S. Bradford 



P.J. Chandler, B.Sc, F.R.E.S. 



B. Goater, B.Sc, M.I.Biol. 



A.J. Halstead, M.Sc 



R.D. Hawkins 



P.J. Hodge 



T.G. Howarth, B.E.M., F.R.E.S. 



I.F.G. McLean, Ph.D., F.R.E.S. 



Mrs F.M. Murphy, B.Sc. 



T.R.E. Southwood, K.B., D.Sc, F.R.S. 



R. W.J. Uffen, M.Sc, F.R.E.S. 



B.K. West, B.Ed. 



1993 British Entomological and Natural History Society. 

 Registered charity number: 2 13 149 



Typeset by Dobbie Typesetting Limited, Tavistock. 

 Printed in England by Henry Ling Ltd, Dorchester. 



