PLATE XII. 



Galls caused by Andeicus noduli iu twigs of Q. peduncidata. 

 A. Normal condition of twig. b. Bark peeled off to expose galls, c. Por- 

 tion of twig B between transverse lines x 25. 

 A and B nearly nat. size. 



Adlard /• Son, Impr. 



