25-1 University of California Publications. [Entomology 



various sizes and in no definite position. Upon rearing the pro- 

 geny of these individuals it was found that to a considerable 

 extent the offspring bore the characteristic markings of the 

 parents. 



Oviposition. — Upon the basis of observing ten individuals, a 

 period of time varying from two to three days was found to in- 

 tervene between emergence and mating, while from mating to 

 egg-laying the time elapsing varied from ten to fourteen days, 

 with an average of 11.9 days. As regards the period of oviposi- 

 tion, a range of from 20 to 51 days was found, averaging 31 days. 

 During these periods the proportion of days upon which eggs 

 were laid varied from 60.0 to 74.1 per cent, with an average of 

 69.5 per cent. The maximum number of eggs laid in one day 

 was 24, the maximum number of eggs for the period was 360, 

 and the minimum 127, thus giving a daily average of 8.0 eggs 

 and a period average of 247 eggs. 



Egg-Laying Records — Coccinella californica Mann. 

 Berkeley, 1914 

 Date 12 3 4 5 6 7 

 April 6 E E 



7 E E E 



8 E M 



9 M M M E 



10 M M 



11 



12 M 



13 



14 



15 



16 



17 



18 - 



19 



20 6 



21 5 10 6 8 



22 2 12 5 



23 8 8 4 9 3 5 4 



24 3 5 14 8 4 16 9 14 11 



25 7 16 6 13 5 7 8 13 6 



26 4 11 13 8 11 7 



27 10 10 16 4 6 18 



28 12 16 8 1 13 9 11 5 



29 14 8 17 6 10 10 14 



30 19 14 6 19 8 7 



