LITE HISTORY OP CODLING MOTH IN PECOS VALLEY, N, MEX, 25 



THE THIRD GENERATION. 



THE THIRD BROOD OP EGGS. 



Lengtli of incubation. — In Table XXIV will be found the results 

 of 96 observations of eggs of the codling moth in an endeavor to 

 determine the length of the several stages from time of deposition 

 until hatching occurs. The average length of time from date of depo- 

 sition to the appearance of the red ring was 3.22 days; maximum, 5 

 days; minimum, 2 days. The average time until the appearance of 

 the black spot was 4.22 days; maximum, 6 days; minimum, 3 days. 

 From date of deposition until time of hatching the average period 

 was 5.75 days; maximum, 9 days; minimum, 4 days. 



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



N. Mex., 1912. 





Number 

 of eggs. 



Date of— 



Days for- 



- 



Observation No. 



Ovipo- 

 sition. 



Appear- 

 ance of 

 red ring. 



Appear- 

 ance of 

 black 

 spot. 



Hatch- 

 ing. 



Red 



ring. 



Black 

 spot. 



Incu- 

 bation. 



1. 



53 



46 

 112 



30 

 120 



26 

 506 



42 

 401 

 103 

 342 

 127 

 192 



46 

 203 

 151 

 341 



85 

 432 



70 

 (>) 

 (') 

 195 



15 

 160 



15 



227 



5 



158 



12 

 100 

 8 

 100 

 2 

 307 

 102 

 195 



12 

 300 



16 



90 



110 



104 







80 

 ISO 

 200 

 109 

 207 



77 



00 



SO 



116 







July 22 



22 



23 



23 



24 



24 



25 



25 



26 



26 



27 



27 



28 



28 



29 



29 



30 



30 



31 



31 



Aug. 1 



1 



2 



2 



3 



3 



4 



4 



5 



5 



6 







7 



7 



8 



8 



9 



9 



10 



10 



11 



11 



12 



12 



13 



13 



14 



14 



15 



15 



10 



16 



17 



17 



July 24 



24 



26 



26 



27 



27 



28 



28 



29 



29 



30 



20 



31 



31 



Aug. 1 



1 



2 



2 



3 



3 



4 



4 



5 



5 



6 







7 



7 



8 



8 



9 



9 



10 



10 



11 



11 



12 



12 



13 



13 



14 



14 



15 



15 



16 



16 



17 



17 



18 



18 



19 



19 



20 



20 



July 25 



25 



27 



27 



28 



28 



29 



29 



30 



30 



31 



31 



Aug. 1 



1 



2 



2 



3 



3 



4 



4 



5 



5 



6 



6 



7 



7 



8 



8 



9 



9 



10 



10 



11 



11 



12 



12 



13 



13 



14 



14 



15 



15 



16 



16 



17 



17 



18 



18 



19 



19 



20 



20 



21 



21 



July 26 



27 



28 



29 



29 



30 



30 



31 



31 



Aug. 1 



1 



2 



2 



3 



3 



4 



4 



5 



5 



6 



6 



7 



7 



8 



8 



9 



9 



10 



10 



11 



11 



12 



12 



13 



13 



14 



14 



15 



15 



16 



Hi 



17 



17 



IS 

 IS 



1'.) 

 1!) 

 20 

 20 

 21 

 21 

 22 

 22 

 23 



2 

 2 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 



I 



3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 3 

 :i 

 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 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 



4 



2 



5 



3 . 



5 



4 



6 





5 



6 



6 



7 



5 



8 



6 



9 



5 



10 



6 



11 



5 



12 



6 



13 



5 



14 



6 



15 



5 



16 . 



6 



17 



5 



18 



6 



19 



5 



20 



6 



21 



5 



22 



23 



24 



25 



26 



27 



28 



6 

 5 

 6 

 5 

 6 

 5 

 6 



29 



30 



31 



32 



33 



34 



35 



36 



5 

 6 

 5 

 6 

 5 

 6 

 5 

 6 



37 



5 



38 



6 



39 





40 



6 



41 



5 



42 







43 



5 





6 



45 



5 



46 



n 



47 



5 



48 







49 



5 



60 ; 







61 



6 



62 



5 



63 



(i 



64 



(> 



