334 Revised List of British Trichoptera. 



and that I have not yet decided whether this will be 

 adopted by me in its fullest extent, or be only indicated. 



Considering the comparatively small number of species 

 in Britain, an addition of twenty in about twelve years 

 is eminently satisfactory. 



Carrying this analysis further back to the date of 

 publication of my "Trichoptera Britannica" (Trans. 

 Ent. Soc. Lond.,'3rd series, vol. v., 1865), I find 127 

 species there enumerated, but these would be reduced to 

 122 according to present views; therefore 30 species 

 (equal to 20 per cent.) have been added since 1865. 



