140 



DECIDUOUS FRUIT INSECTS AND INSECTICIDES. 



Table XXIV. — Second-brood eggs. Incubation period of eggs laid in rearing cages — 



Continued. 



The length of the egg stage ranged from 7 to 17 days, with an 

 average of 10.92 days. Very little difference in the length of the 

 stage is shown by Table XXIV for the 78 days or period of oviposit- 

 ing by the first-brood moths. The red ring appeared from 2 to 3 days 

 after deposition usually, the black spot from 6 to 10 days. 



Table XXV. — Incubation period of second-brood eggs. Summary of Table XXIV. 



SECOND BROOD OF LARVAE. 



Feeding 'period. — As mentioned under the egg stage, eggs were 

 obtained from July 9 to September 25, a period of 78 days, and were 

 hatching from about July 19 to October 8. The feeding periods 

 were observed on a number of these at various intervals and devel- 

 oped normally and spun cocoons in the rearing cages in which they 

 passed the winter. The details of these records are given in Table 

 XXVI. 



