54 BULLETIN 429, U. S. DEPARTMENT OF AGRICULTURE. 



SUMMARY OF RECORDS. 



A condensed summary of the records on the stages of the first gen- 

 eration is found in Table XLIL The average of the averages of the 

 different stages is found to be 47.37 days, as compared with 46.91 

 days in the total life cycle column, a difference of but .46 day. The 

 length of the life cycle of the insect of the first generation of 1912, as 

 obtained by addition of the separate stages, was shown to be 50.62 

 days. This number is 3.25 days greater than the corresponding 

 sum of the length of the several stages of the first generation during 

 1913. 



