li)!*^] Thoracic Sderites of Hemiptera 249 



EXPLANATION OF PLATES. 

 (.Note: All are lateral views unless otherwise indieatcd). 



Plate XX. 



Fig. 1. Cicada tihicen Cicadidac). Mesonotum and wing artieulation. Dorsal 



view. 

 Fig. 2. Same. Pro-, mcso- antl metathorax. Ventral view. 

 Fig. 3. vSame. Prothorax. 

 Fig. 4. Same. Mcsothorax. (A combination of conditions in C. tibicen and in 



Cryplotympana epithesia ) . 

 Fig. 5. Same. Metathorax. 

 Fig. 6. Aphrophora sp.' (Cercopidse). Metathoraeie pleuron and sternum. 



Plate XXL 



Fig. 7. Draeculacephala sp. (.Jassidse). Mesothorax. 



Fig. 8. Ormenis sp. (Fulgorida?). Metathoraeie pleuron and sternum. 



Fig. 0. Fulgora sp. (Fulgorida-). Metathorax. 



Fig. 10. Apsylla cistella (Psyllidse). Pro-, meso- and metathorax. From 



Crawford, 1914. 

 Fig. 11. Arytaina robusta (Psyllidasj. Pro-, me.so- and metathorax. From 



Crawford. 1914. 

 Fig. 12. Pemphigus acerifolia {\\A\\d\(.\x). Meso- and metathorax. See footnote 



page 234. 

 F'ig. 13. Aleyrodes vaporariorum. (Alej^rodidse). Metathoraeie pleuron and coxa. 



Pl.\te XXI L 



Fig. 14. Emesa sp. (Emesidai). Meso- and metathorax. 



Fig. 15. yotonecta sp. (Notonectidae). Mesothorax. 



Fig. 16. Same. Metathorax. 



Fig. 17. Ranatra sp. (Nepidaa). Mesothorax. 



Fig. 18. Belostoma americayia (Belostomatidse). Mesothorax. 



Fig. 19. r«n.Ta .sp. (Corixidae). Meso- and metathorax. 



Fig. 20. Belostoma americana {^e\ostomsii\dst). Metathorax. 



Fig. 21. Gerris sp. (Gerrids). Meso- and metathorax. 



Pl.\te XXIII. 



Fig. 22. Neides sp. (Berytidai). Meso- and metathorax. 



Fig. 2;L Anasa tristis (Coreidae). Meso- and metathorax. 



Fig. 24. Corisciis sp. (Nabidae). Meso- and metathorax. 



Fig. 25. Thyreocoris sp. (Thyreoeorid:c). Meso- and metathorax. 



