8 



THE CLASSES. 



two small feelers and a small trunk or brush at the nose ; 

 they have six long small legs, and a pair of long 

 narrow wings : some slanting upwards from the 

 shoulders ; others laying horizontally on each other 

 over the back. In cold weather they are weak and fly 

 heavy, but when warm and suitable they take lofty 

 flights. There are vast varieties of them, many of 

 very delicate texture and rich colors. Some are bred 

 on land and some in the water ; and all are very natu- 

 ral and attractive to fish. 



STH. HOUSE FLY. The flies of this class resem- 

 ble the house fly in having large heads, thick shoul- 

 ders and body, which is about half the length of the 

 fly, with a pair of clear oblong wings which lie flat or 

 horizontal, and point more or less from the body. 

 They are principally bred on land, but being exceed- 

 ingly numerous, many fall casually on the water and 

 are taken by the fishes. 



