PLATE XIII. : 
Galls caused by: a. AnpDRIcUS NUDUS; B. A. PILOSUS; C. APHILO- 
THRIX QUADRILINEATUS; on staminate catkins of Q. sessilijlora. 
A, nearly nat. size. B,c, x 2h. 
Adlard § Son, Impr. 
