CONTENTS. 



A PRELIMINARY LIST OF DURHAM' DIPTER A, 

 WITH ANALYTICAL TABLES. 



By the Rev. W. J. Wingate. 



With Seven Plates. 



The volumes of the present and preceding series of Transactions may 

 be obtained through the publishers, or direct from the Hon. Secretaries, 

 Museum, Barras Bridge, Newcastle-on-Tyne. 



Where brevity is desired in directing exchanges, etc., the following 

 is a sufficient address : 



Natural History Society, 



Newcastle-on-Tyne, 



England. 



PRINTED BY J. BELL AND CO., RAILWAY LANE, PILGRIM STREET, NEWCASTLE-ON-TYNE. 



