VARIOUS FLIES— HYMENOPTERA. &c. 65 



the wing, that it is most difficult to catch. It delights 

 in sunshine, and its brilliant colours which change 

 with every movement — ^now red, now green, now blue- 

 are beautiful in the extreme. On bright days we have 

 done well with its imitation in deep waters. 



Fig, 86 is another Ichneumon fly {Green nematus). 

 It is very common, and appears about June and after. 

 It is a fine green colour, and makes a capital lure. 



Fig. 87 is a Dipteron, which appears regularly in 

 August {Oxycera trilineata). It is another beautiful 

 fly, and its fine blending of green and black and red 

 make a very fine and alluring combination in an 

 artificial. 



Fig. 88 is the Grass Bug, one of the Hemiptera. 

 It appears in thousands in some locaUties when the 

 grass is getting long, and on a windy day is* well 

 worth trying. 



There is also another of this species, slightly 

 smaller than the brown one here figured, it is green 

 in colour. 



Fig, 89 is a small Green Aphis, similar to those 

 found on rose trees. It often occurs in countless 

 numbfers on marginal plants and bushes, and a strong 

 gust of wind blows it on to the water, often causing 

 a wild rise of trout, grayling, and other fish. 



Fig. 90 is another of the Hemiptera, getting on the 

 water in numbers under similar conditions. Its delicate 

 combination of green and red suggested a fly which 

 has been described by some as a " marvel," it certainly 

 deserves to be classed as " useful." 



E 



