h. The common species of blister beetles {Meloidm), the larvae 

 of which prey upon locust eggs. 



c. The larvse and imagos of our common ground beetles ( Ca- 

 rabidce), which also destroy locust eggs. ^ 



(/. A dipterous egg-parasite (possibly Anihomyia angusfifroiis, 

 Meig. ), which had destroyed many of the locust eggs in Knox 

 county during the autumn of 1885. 



Various other insect enemies may occasionally appear in signifi- 

 cant numbers.* 



• For a discussion of enemies of the RocJ^y Mountain locust (the majority of which probably 

 prey upon our indigenous species), see 1st Rep. U. S. Ent. Com., pp. 284-334. 



