PLATE VI. 

 Galls Formed by Hymenopterous Insects. 



1. Blackberry Seed Gall, Diastrophus cuscutceformis O. S. 



2. Knot Gall, Diastrophus nebulosus O. S. 



3. Mealy Rose Gall, Rhodites ignoHis O. S. 



4. Oak Bullet Gall, Holcaspis globulus Fitch. 



5. Mossy Rose Gall, Rhodites roscc Linn. 



All natural size. 



