242 THE DRY-FLY MAN'S HANDBOOK 



Kennet at Ramsbury the blue-winged olive was often 

 found at the commencement of the trout season in 

 April, and continued to show up to the end of October. 

 Probably it was present even later in the year, but 

 I had no opportunity of proving this by the positive 

 evidence of observation, not being at the river-side 

 during the late autumn and winter. 



The olive and the dark olive dun are the names 



applied by all fly-fishermen to 



Olive dun. five species of the genus Bae- 



lis. Three of these are com- 

 paratively rare, and may therefore be excluded from 

 our list. The other two, B. rhodani and B. vernus, 

 are found in most English streams, and are very 

 plentiful in the south-country chalk-streams during 

 the months of April, May, June, September, October 

 and even later in the winter. Being very similar in 

 appearance the species are not easily determined, and 

 from the fisherman's point of view may be treated 

 here as one. 



They may be described generally as having smoky 

 or mousy-grey wings. The legs are in some portions 

 greenish grey, in others sepia-grey, and the setse are 

 described by Eaton as greenish grey with reddish or 

 warm sepia joinings. The effect of this colouring is 

 that the body, legs, and setae give the appearance, 

 when viewed with a hand magnifier, of being olive of 

 a more or less bronze shade in some and green in 

 others. 



In the new list of patterns Nos. 7 and 8 are the 



