66 LIST OF FLIES. 



32. OAK FLY, DOWNLOOKER, OR CANON 

 FLY. This fly is frequently found on oak, 

 ash, and willow trees, in May and June, 

 and points its head downwards. The wings 

 lie flat on the back, and are made with a 

 feather from the wing of a partridge ; the 

 head of the fur from the hare's ear; the 

 body of dun fur mixed with orange and 

 yellow mohair. 



33. YELLOW SALLY. This appears early 

 in May and continues till the end of June. 

 The wings lie flat and are made of a hackle 

 dyed yellow ; the body of yellow w r orsted 

 unravelled and mixed with fur from a 

 hare's ear. 



34. WHIRLING BLUE. This appears 

 early in August and continues till the end 

 of the season. The wings are made of the 

 feather of a sea swallow, the body of pale 

 blue fur mixed with yellow mohair, and a 

 pale blue hackle for legs. 



