INJURIOUS AND BENEFICIAL INSECTS OP CALIFORNIA. 



160 



Control. — The use of oil emulsion or miscible oil sprays and fumi- 

 gation are suggested as control measures. Potted plants may be 

 either dipped in the above solutions or fumigated in a tight compart- 

 ment. 



Fig. 



times. 



146. — The zamia scale. Diaspis zamur Morg., on sago palm. Enlarged three 

 Collected at Golden Gate Park, San Francisco, by B. B. Whitney. (Original) 



