EVOLUTION OF THE TROUT FLY. 161 



given for May and called the Yellow Fly, with 

 a body of yellow wool, a red cock's hackle, and 

 wings of the drake stained yellow; but that is 

 so clearly and unmistakeably the Little Yellow 

 May Dun that it can be rejected. So on the 

 whole I believe the identification to be right. 

 Mascall misread Maure and made it into More 

 or Moorish : and as the Moorish Fly the fly got 

 into Markham and Walton, and from Walton 

 into those who stole from him : and Tandy or 

 Tan-coloured similarly got corrupted into 

 Tawny. Both names were slavishly copied 

 into fishing books, until Bowlker knocked them 

 out. Whether the identification of the 

 Treatise's flies be accepted or not, there is no 

 doubt that Barker knew the Mayfly. He made 

 is 'with a shammy body ribbed with black hair' 

 or with black sandy hog's wool ribbed with 

 black silk, and winged with mallard. Cotton 

 also knew and described it. He called it the 

 Green and Grey Drake and gives a long and 

 good account of the natural insect. He dressed 

 the Green Drake with a light mallard wing 

 dyed yellow, and the Grey Drake with undyed 

 grey mallard, the darkest grey feather. 



A whole book could be written on the 

 dressings of the Mayfly alone. Until the 

 middle of last century a mallard wing was 

 almost universal; but it has now been largely 

 replaced by wood or summer duck or Egyptian 

 goose. Many other materials have been used : 

 teal ? Rouen drake, Guinea fowl, Andalusian 



