54 



CALIFORNIA CITRUS CULTURE. 



FIG. 30. Aspidiot'us hedenv (Vail.) on lemon and in 

 such cases known as the lemon peel scale. (Essig, 

 P. C. Jr. Ent. ) 



^^^^^^^i 



FIG. 31. Red scale, Chrysomphalus aurantii (Mask.) 

 on orange. (Essig, P. C. Jr. Ent.) 



