PLATE 6i 



A. — Hesperethusa crenulata, showing discolorations resulting from inoculations with 

 Pseudomonas citri. Natural size. 



B. — Paramignya longipedunculata, showing discolorations around punctures made 

 with P. citri on leaves. Such discolorations did not develop at punctures made with 

 river water. Natural size. 



