1918] Morphology of Genitalia of Insects 141 



Plate VIII — Hemiptera. 



Tibicen septemdecim, 1, 8, d', ventral vieWs; 3, 12, 9, lateral views; 9, cf, dorsal 

 view; 15, cf, Jateral view; 18, 9, dorsal view. 



Corixa sp., 2, 9, ventral view; 19, 9, dorsal view. 



Benacus griseus, 4, 13, 14, 9, lateral views; 7, 9, ventral view; 6, 9, dorsal view. 



Notonecta tmdulata, 5, 22, cf, lateral views; 10, 11, dorsal views; 16, 17, 21, cf , ven- 

 tral views; 20, 9 , ventral view. 



Plate IX— Hemiptera. 



Anasa tristis, 1, 3, 9 , dorsal views; 2, 7, 8, 9 ventral views; 5, 9 , dorsal and mesal 



views. 

 Corixa sp., 4, 6, 10, 9 , ventral views; 11, 14, 9 , dorsal views. 

 Notonecta undulata, 9, 9 , ventral view. 

 Benacus griseus, 12, 18, cf, ventral views; 13, d^, lateral view; 15, cf , dorsal view; 



16, d, mesal view; 17, cf, lateral and ental view. 

 Notonecta, 19, 9 , ventral view. 



Plate X — Hemiptera. 



Euschistus variolarius , 1, 9 , dorsal view; 2, 6, 9 , ventral view; 3, 8, cf , dorsal views; 



9, cf , ventral view; 10, o^, mesal view. 

 Anasa tristis, 4, 17, cf , ventral views; 7. cf, ental view; 14, cf, caudal view; 15, cf, lateral 



view; 18, cf , dorsal view; 20, cf , mesal view. 

 Notonecta undtilata, 5, 9 , dorsal view. 

 Benacus griseus. 11, 9 , caudal view; 12, 9 , mesal view; 13, 16, ventral views; 19, cf . 



ventral and ental view. 



Plate XI — Neuroptera, Mecoptera, Trichoptera. 



Corydalis cornuta, 1, cf , ventral view; 2, cf , dorsal view; 4, cf , ventral-caudal view; 



5, 9 , dorsal view; 6, 9 , ventral view; 15, 9 , lateral view; 19, 9 , caudal view. 

 Panorpa lugubris, 3, 8, 21, cf, lateral views; 9, cf, mesal view; 11, 9 , ventral view; 



12, 18, dorsal views; 14, 9, ental and ventral views; 16, cf, ventral view; 17, 



cf, mesal and ventral views;. 

 Nerophilus calif ornicus, 7. cf , ventral view; 10, cf , dorsal view; 13, cf , caudal view. 



Plate XII — Coleoptera. 



Harpalus caliginosus, 1 2, 7, 9 , dorsal views; 4, 5, 8, 9 , ventral views; 9, 9 , mesal 

 view; 10, cf , lateral view; 11, 13, cf, dorsal views; 17, 23. cf , ventral views. 



Cybister fimbriolatus. 3, 18, cf, ventral views; 12, cf , mesal view; 14, 21, 9, dorsal 

 views; 15, 9 , lateral view; 19, cf , dorsal view; 20, 9 , ventral view. 



Doryphora decemlineata, 6, cf, ventral view; 16, 9, ventral view. 



Plate XIII — Coleoptera. 



Hydrophilus triangularis, 1, 14, cf , dorsal views; 6, 15, 16, cf , ventral views; 7, 9 , ental 



view; 11, 9 , ventral view; 20, 9 , dorsal view. 

 Doryphora decemlineata, 2, 13, 18, cf, ventral views; 4, 5, dorsal views; 10, 22, 9, 



dorsal views; 17, 9 , ventral view; 24, 9 , ventral and ental views. 

 Cybister fimbriolatus, 3, 9 , ental view; 8, cf , dorsal view; :, 9 dorsal view; 12, 21, 



cf , lateral views; 19, 9 , ventral view. 

 Harpalus caliginosus, 23, 9 , ental view; 25, 9, lateral and ental view. 



