316 Annals Entomological Society of America [Vol. XII, 



Plate XXIII. 



31. Grylloblatta campodeiformis, adult; lateral view of end segments and ovipositor. 



32. Same; ventral view. 



33. Same; dorsal view of ovipositor, left ventral valvula bent outwards, right 



not shown. 



34. Same; inner view of structure at base of ovipositor, left side. 



35. Same; anterior view of base of ovipositor. 



36. Same, nymph; lateral view. 



Plate XXIV. 



37. Grylloblatta campodeiformis, nymph; ventral view of end-segments. 



38. Same with ventral valvulae bent forward to expose inner valvulae. 



39. Timema calijornica, adult; ventral view of end segments. 



40. Same, lateral view. 



41. Diapheromera femorata, adult; ventro-lateral view of end segments. 



42. Same; lateral view of ovipositor; most of the 9th tergite cut away to show 



the superior apophysis. 



43. Same; dorsal view of ovipositor. 



Plate XXV. 



44. Stagmomantis Carolina, adult; 8th sternum and ventral. 



45. Same; dorsal view of ovipositor, with dorsal valvulae spread apart. 



46. Same; ventral view of ovipositor with ventral valvulae spread apart. 



47. Same; lateral view of terminal segments and ovipositor with 7th sternum 



bent downwards to expose the valvulae. 



48. Same; inner view of structures at base of ovipositor. 



49. Same; anterior view of base of ovipositor. 



Plate XXVI. 



50. Parcoblatta pensylvanica, adult; ventral view of ovipositor, the left ventral 



valvula cut ofif at base. 

 ■51. Same; the valvulae bent forward to show their dorsal surfaces and the right 



dorsal valvula removed. 

 •52. Same; ventro-lateral view of terminal segments, the 7th sternum removed. 

 -53. Same; ovipositor removed, cleared, and viewed from above. The ventral 



valvulae and the dorsal valvulae, except their bases, are omitted. 

 -54. Same, last nymphal stage; ventral view of end segments with the 7th sternum 



except a small part, removed. 

 55 to 58. Same; successive stages in the development of the genitalia, ventral 



view, 7th sternum removed, cerci 10th and anal segments omitted. Fig. 58 



is from the adult. 



Plate XXVII. 



59. Cryptocercus piinctulatus, adult; ventral view of end segments, the 7th sternum 



removed. 



60. Termopsis angusticollis, adult; lateral view of end segments. 

 •61. vSame; ventral view of end segments, the 7th sternum removed. 

 '62. Forficula aiiricularia, adult; lateral view of end segments. 



'63. Same, dorsal view. 



'64. Same, ventral view, 7th sternum- removed. 



65. Anisolabiis maritima, adult; ventral view of end segments, the 7th sternum 



removed. 



66. Kalocrania marmoricrura, adult; ventral view of ovipositor and neighboring 



sclerites. (After Zacher.) 



67. Echinosoma occidentale, adult; ventral view of ovipositor and part of segment 



10. (After Zacher.) 



Plate XXVIII. 



68. Embia major, adult; lateral view of end segments. 



69. Pteronarcys proteus, adult; ventral view of end segments. (After Smith.) 



70. Perla lycorias, adult; ventral view of end segments. 



71. Aeshna canadensis , adult; ventral view of end segments. 



72. MacAi'/u sp., adult; ventral view of end segments. 



73. Same; 8tli sternum and gonapophyses (ventral valvulae). 



74. Same; 9th sternum and gonapophyses (dorsal and inner valvulae.) 



