Vol. 1] Clausen. — Life-Histories of California Coccinellidae. 273 



rather low, the daily maximum being from 65° to 75° Fahrenheit. 

 For feeding purposes rather large rose aphids were used thi-ough- 

 out, these being somewhat larger than the hop aphid used in the 

 feeding tests at Sacramento, California. In the adult feeding 

 records for ten individuals the period total varied from 370 to 

 429, with an average of 397 aphids. This represents a daily con- 

 sumption of 24 to 28 aphids, with a general average of 26.5 per 

 day. The largest number eaten by an individual in one day 

 was 42. 



Total 271 392 312 324 283 317 270 320 



Average 11.2 14.0 12.2 12.4 11.3 12.1 11.2 11.4 



