95 



treatise on the English water insects is much 

 wanted ; as most of the collectors of this 

 branch of natural history, who have spared 

 no trouble or expence in procuring foreign 

 insects, are lamentably deficient in specimens 

 of the description herein mentioned. 



Accurately to enumerate the different 

 names by which the several flies are distin- 

 guished would be impossible, as the neigh- 

 bouring inhabitants of almost every river 

 have different titles for the same insect. 

 Such however as are known to be standard 

 flies are given with references to their num- 

 bers, and the number of the plate. The re- 

 mainder are no doubt well known to the 

 experienced Angler by some denomination 

 or other ; but as name can add little to his 

 information or success, when he has the 

 representation before him, they will be des- 

 cribed in the order in which they appear on 

 the plates, as follows : 



