Plate I. 



San Jose Scale.— a California pear, moderately 

 infested— natural size; h female scale — 

 enlarged. 



San JoEi' Scale.— Apple branch with scales 



in .sJiM- natural size; enlarged scales 



above, at left. 



© 



San .Jose Scale.— a Young larva — greatly 

 enlarged; 6 antenme of same— 

 btill more enlarged. 



San .Jo86 Scale.- c Adalt female containing young- 

 groat ly enlarged ; d anal fringe of same — 

 still more enlarged. 



All illustrations are after Riloy and Howard, and used here by permission of the Secretary of Agriculture. 



