26 



BULLETIN 429, U. S. DEPAETMEISTT OF AGEICULTUEE. 



Table XXIV. — Length of incubation of third brood of eggs of the codling moth at Roswell, 

 N. Mex., 1912 — Continued. 





Number 

 of eggs. 



Date of— 



Days for- 



- 



Observation No. 



Ovipo- 

 sition. 



Appear- 

 ance of 

 red ring. 



Appear- 

 ance of 

 black 

 spots. 



Hatch- 

 ing. 



Red 

 ring. 



Black 

 spot. 



Incu- 

 bation. 



55 



329 



123 



137 



5 



120 



112 



92 



225 



125 



31 



142 



54 



97 



7 



302 



107 



75 



341 



7 



160 



24 



8 



52 



16 



90 



6 



4 



8 



162 



46 



84 



16 



10 



46 



16 



6 



10 



4 



4 



13" 



20 



7 



Aug. 18 



18 



19 



19 



20 



20 



21 



21 



22 



22 



23 



23 



24 



24 



25 



25 



26 



26 



27 



27 



28 



28 



29 



29 



30 



30 



31 



31 



Sept. 1 



1 



2 



2 



3 



3 



4 



4 



5 



5 



6 



7 



8 



8 



Aug. 21 



21 



22 



22 



23 



23 



24 



24 



25 



25 



26 



26 



27 



27 



28 



28 



29 



29 



30 



30 



Sept. 1 



1 



2 



2 



3 



3 



4 



4 



5 



5 



6 



6 



7 



7 



8 



8 



9 



9 



10 



11 



13 



13 



Aug. 22 

 22 

 23 

 23 



24 



24 



25 



25 



26 



26 



27 



27 



28 



28 



29 



29 



30 



30 



31 



31 



Sept. 2 



2 



3 



3 



4 



4 



5 



5 



6 



6 



7 



7 



8 



8 



9 



9 



10 



10 



11 



12 



14 



14 



Aug. 23 

 24 

 24 

 25 

 25 

 26 

 26 

 27 

 27 

 28 

 28 

 29 

 29 

 30 

 30 

 31 

 31 



Sept. 1 



2 

 3 

 ■ 4 

 4 

 5 

 5 

 6 

 6 

 7 

 7 

 8 

 8 

 9 

 9 

 10 

 10 

 11 

 11 

 12 

 12 

 14 

 16 

 17 



3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 4 

 4 

 4 

 4 

 4 

 ■ 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 5 

 5 



4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 5 

 5 

 5 

 5 

 5 

 5 

 5 

 5 

 5 

 5 

 5 

 5 

 5 



' 5 

 5 

 5 

 5 

 5 



. 5 

 5 

 6 

 6 



6 



56 



6 



57 



5 



58 



6 



59 



5 



60 



6 



61 



5 



62 



6 



63 



5 



64 



6 



65 



5 



66 



6 



67 - 



5 



68 



6 



69 



5 



70 



6 



71 



5 



72 



6 



73 



5 



74 



6 



75 . 



6 



76 



7 



77 



6 



78 



7 



79 



6 



80 



7 



81 . . 



6 



82 



7 



83 



6 



84 ... 



7 



85 ... - 



6 



86 



7 



87 . 



6 



88 



7 



89 



6 



90 



7 



91 



6 



92 



7 



93 



6 





7 



95 



8 



96 



9 



















5 

 2 

 3.22 



6 

 3 

 4.22 



9 















4 





1 









5.75 





1 











1 Exact number of eggs not recorded. 



TiTYie of Tiatching. — ^According to the records in Table XXIV 

 hatching of eggs of this brood began July 26 and continued until 

 after the middle of September. A study of the table will show 

 that hatching in greatest numbers was found to occur between 

 August 1 and August 8. 



THE THIRD BROOD OP LARV^. 



Length of feeding period. — ^A total of 829 individual insects were 

 kept under observation in order to obtain the records found in Table 

 XXV. During the progress of the experiments the transforming 

 larvae were not separated from the wintering larvae, which possibly 

 mfluences the average length of the feeding period to some extent. 

 The records given cover a variation in the length of the feeding 

 period of from 15 to 56 days, or a range of variation of 41 days. 

 The average length of the period was 26.55 days. 



