212 SALMONIA. 



perfect animals, male and female, fitted for 

 the office of reproduction. In the early 

 spring, the species which are called green 

 tails, from the colour of the bags of eggs in 

 the female, appear in the warm gleams of 

 sunshine which happen in cloudy days, and 

 they then cover the face of the water, and 

 are greedily seized on by the fish. As the 

 season advances they appear principally in 

 the morning and evening. In the heat of 

 summer the phryganeae are almost nocturnal 

 flies, and seem to have the habits of moths : 

 at this season, now, I should say, the few 

 flies that appear are generally seen in the 

 day-time. The ephemerce, another class of 

 flies peculiarly interesting to the fisherman, 

 differ from the phryganeae in carrying their 

 wings perpendicularly on their backs, and in 

 having long filaments or hairs in their tails. 

 The March brown, (see Jig. 8,) the various 

 shades of duns, (see Jig. 5, 6, and 7,) which 

 I described to you on a former occasion; 

 the green (see Jig. 9 and 10,) and white 

 May fly, the red spinner, (see Jig. 11,) 

 are all of the class ephemerae. These flies 



