D1PTERA 63 



our houses are not the true House-fly 

 (Musca domestica). The male Musca corvina. 

 whose portrait is given on Plate I., has a 

 body which appears to consist of alternate 

 stripes of yellow and brown. The female, 

 however, has a uniformly dark body. Of 

 the other flies, very similar in appearance 

 to House-flies, the bodies vary in colour ; 

 but if made of a yellowish or dull brown, 

 sometimes ribbed, it will generally prove 

 like enough to nature, to deceive the 

 trout. 



Body. Yellow ochre-coloured Berlin wool, 

 spun on black silk. Ribbed with silver 

 tinsel and dark brown according to cir- 

 cumstances. (The exact shade is easy to 

 see on the under surface of the natural 

 fly. The under surface of the fly is the 

 surface seen by the trout.) 



Hackle. Ooch-y-bondhu. 



Wings. Transparent quill feather of 

 starling. 



Hook. Nos. 00 1, new size. 



(Illustrations of imitation, Plate II.) 



