EXPLANATORY PAGE 



This is the second volume published of an intended work on the British 

 Diptera. The volume is complete in itself, but yet may be part of an 

 entire work composed of about fourteen volumes as was outlined in the 

 "Explanatory Page" of the first volume. During the eight years which have 

 elapsed since the scheme was first promulgated some modifications have 

 become necessary, but not of a nature to necessitate any serious change. 



The present Book would be Vol. V. of the complete work, or a 

 Volume on the STKATiOMYiDiE, &c., of Geeat Britain. 



Two more volumes will be commenced at once ; one by myself on the 

 Chironomid^, and one by Mr J. E. Collin on the group which is commonly 

 known as " MusciDiE Acalyptrat^." 



