PLATE XVIII. 



Fig. 1. — Transverse section of gall of Bhodites 

 spinosissimae. 



Fig. 2. — Longitudinal section of gall of Aulax hie- 

 racii. 2 a, transverse section. 



Fig. 3. — Transverse section of gall of Andricus 

 albojpunctata. 3 a, longitudinal section. 



