6 PREFACE. 



Chironomidce ; I hope to make this the third volume of "British Flies," in 

 which case I can say that probably over a hundred new British species will be 

 added, and consequently I have unloaded the burden of most of Walker's 

 names (not species !) to the Expurgated List. 



Stratiomyida to Cyrtida ; these families are intended to be included in the 

 second volume of " British Flies," which is now considerably worked out. 



Tachinida ; the nomenclature and arrangement of this family have been 

 revolutionised, but are still very far from being complete, though the improved 

 arrangement will undoubtedly be of assistance to students. 



Numerous unrecorded British species are included in this Second 

 Edition of which records will probably soon appear; at present such 

 species stand only on a level with those recorded in the catalogues 

 of Curtis and Stephens. 



I have great hope that the increased interest in British Diptera 

 will soon enable us to have Faunal Lists almost as accurate as 

 those which are possessed by at least the Coleoptera &c., even if 

 we cannot hope to equal those of the Lepidoptera. 



The imperfections of this " List " are as fully recognised as 

 they were in the "List" of 1888, but the improvements are 

 obvious. A fairly complete "List" could be issued if only some 

 sharp-sighted young Entomologist would master the Cecidomyidce. 



I may well repeat the words used at the conclusion of the 

 preface of the First Edition of my " List of British Diptera " and 

 say again "let this list quickly give place to another." 



G. H. VERRALL. 



SUSSEX LODGE, NEWMARKET, 

 December, 1901. 



