288 JJniversity of California Publications. [Entomology 



Adult Feeding Eecords — Adalia bipunctata Linn. — (Continued) 



Total 305 246 258 256 266 247 254 240 227 215 



Average 20.3 16.4 17.2 17.0 17.7 16.4 16.9 16.0 15.1 14.3 



Cycloneda sanguinea Linn. 



This species, while not particularly abundant in any part of 

 the state, may be found quite generally distributed over the Sac- 

 ramento and San Joaquin valleys and in certain coastal regions. 

 The adults pass the winter singly in sheltered places upon trees 

 and shrubs. The larvae have been observed feeding quite ex- 

 tensively upon the woolly apple aphis {Sdtizoncura lanigcra), 

 as well as the more common aphid species. 



Oviposition. — The interval of time between emergence and 

 mating in the ten specimens under observation ranged from one 

 to three days, with an average of 1.9 days, Avhile the period 

 elapsing between mating and oviposition varied from seven to 

 twelve days, averaging 10.1 days. 



The period of oviposition extended from 19 to 42 days, aver- 

 aging 28.8 days. The proportion of days upon which oviposition 

 of the ten individuals actually occurred was 73.6 per cent, with a 

 range of from 64.1 to 78.2 per cent of the total number of days 

 of the adult life following the deposition of the first eggs. Dur- 

 ing this period the egg-production totals varied from 121 to 318, 

 with a period average of 201 and a daily average of 7.0 eggs. 



