PLATE XVII. Reduviidae and Tixgidae. 



i. Emesa brevipennis Say, x i. 



2. Piesnia cinera Say, x 8. 



3. Melanorhopala clavata Stal, x 8. 



4. Physatochcila, x 8. 



5. Gclchossa heidemanni Osborn and Drake, x 8. 



6. Corythucha marmorata Uhler, x 8. 



7. Gargaphia angulata Heidemann, x 8. 



8. Stephanitis pyrioides Scott, x 8. 



Photographs by B. H. Walden. 



