CODLIKG MOTH IN SANTA CLARA VALLEY. 



131 



females, were collected on June 30, the second collection, while 27 

 male larva?, or 71 per cent of the total number of males, were taken 

 on the second collection. It is evident therefore that a larger per- 

 centage of the total number of males was influenced by a higher mean 

 temperature (on account of later collection in June) than females, 

 which would naturally lead one to expect a shorter average pupal 

 stage for the males in comparison with that of the females. Possibly 

 a few individuals with a long pupal stage in the male series of 38 

 individuals caused a greater influence on the average length of the 

 stage than the same number of individuals in the female series of 103 

 larva? would do. 



The average length of the pupal stage of all the larva? was 19.04 

 days, the maximum 55 and the minimum 11 days. (See Table XX.) 

 A summary of Tables XVIII and XIX is given in Table XX, showing 

 the variations observed in the length of the stages during the entire 

 period when pupa? were found. 



Table XVIII. — Pupae of the first brood— Length of the pupal and cocoon periods of 38 

 male larvae collected in 1910 on banded trees. 







Date— 





6 . 







Date- 





6 . 



No. 







■a w) 

 5 M 





No. 













| 











Spun 

 cocoon. 



Pupated. 



Emerged. 



a! 



§8 



1—1 





Spun 

 cocoon. 



Pupated. 



Emerged. 





fi 



3 s 









Days. 



Days. 











Days. 



Days. 



1 



June 21 



June 25 



July 11 



16 



20 



20 



July 1 



July 7 



July 22 



15 



21 



2 



...do 



June 27 



July 14 



17 



23 



21 



...do 



...do 



July 20 



13 



19 



3 



...do 



June 25 



July 17 



22 



26 



22 





Aug. 9 



Aug. 28 



19 





4 



...do 



June 27 



...do 



20 



26 



23 



"July "i" 



July 7 



July 23 



16 



*22" 



5 



...do 



...do 



...do 



20 



26 



24 



...do 



Aug. 1 



Sept. 2 



32 



63 



6 



June 22 



July 1 



July 19 



18 



27 



25 



...do 



July 5 



July 20 



15 



19 



7 



...do 



July 9 



July 27 



18 



25 



26 



...do 



July 23 



Aug. 16 



24 



46 



8 



...do 



July 19 



Aug. 9 



21 



48 



27 



...do 



Aug. 10 



Sept. 4 



25 



65 



9 



June 24 



June 30 



July 17 



17 



23 



28 



...do 



July 27 



Aug. 15 



19 



55 



10 



...do 



June 20 



Aug. 10 



21 



47 



29 



...do 



July 7 



July 21 



14 



20 



11 



...do 



July 12 



Aug. 1 



20 



38 



30 



...do 



July 28 



Aug. 25 



28 



55 



12 



July 1 



July 30 



Aug. 24 



25 



54 



31 



...do 



July 7 



July 20 



13 



19 



13 



...do 



July 24 



Aug. 13 



20 



43 



32 



July 2 



July 9 



July 27 



18 



25 



14 



...do 



...do 



Aug. 16 



23 



46 



33 



...do..... 



July 8 



July 24 



16 



22 



15 



...do 



July 19 



Aug. 10 



22 



40 



34 



...do 



July 7 



...do 



17 



22 



16 



...do 



July 5 



July 20 



15 



19 



35 



...do 



Aug. 1 



Sept. 1 



31 



61 



17 



...do 



July 7 



July 23 



16 



22 



36 



July 4 



July 14 



Aug. 3 



20 



30 



18 



...do 



...do 



July 27 



20 



26 



37 



July 11 



July 15 



...do 



19 



23 



19 





...do 



July 24 



17 





38 



July 12 



July 16 



Aug. 7 



22 



26 







