189 



Fig 1 . 178. Pond flies. 

 Enlarged. (Original.) 



dom of movement, such as plant lice, mealy-bug and borers, 

 are most subject to attack by fungi, although flies, cotton 

 stainers, moths and grasshoppers are also affected, some- 

 times in such numbers as to materially influence the 

 abundance of these insects. 



Fig. 179. Moth borer larva attacked by Cordyceps Barberi. 

 (Imperial Dept. Agric,) 



