FLIES FOR MARCH. 57 



No. 6. COW DUNG FLY. 



This fly is to be seen throughout the year. In 

 the young state it is very abundant about the 

 middle of March, when vast quantities are seen 

 upon the water if there be a high wind. The 

 colour of the male, when newly hatched, is a very 

 bright tawny yellow, that of the female a greenish 

 brown ; she is rather smaller than the male, is 

 found in as great numbers on the water, and is as 

 good a fly to imitate. This insect is not in full 

 season after the end of April, but in very bluster- 

 ing days may be used all the year round. 



IMITATION. 



BODY. Yellow worsted, mohair, or camlet, 

 mixed with a little dingy brown 

 fur from the bear, and left rather 

 rough, spun upon light brown silk. 



WINGS. From the landrail. 



LEGS. Of a ginger coloured hackle. 



The female is made buzz thus : 



BODY. Olive-coloured mohair, or worsted, 

 spun on silk of the same colour. 



WINGS AND LEGS. Of a red cock's hackle, 

 changed to a brown colour by put- 

 ting it into a solution of copperas. 

 (See Dyes, Chap. II. p. 33, article 2). 



