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GUIDE TO CALIFORNIA INSECTS. 



Flg-ure 355. Diagram ilustrating the 

 flght of Agrlon A. From above, the 

 curved line showing the path of the stig- 

 ma. B. From the side, according to the 

 theory of von Ijendenfeldt. C. From the 

 side, according to the theory of Marey. 



