AKT. 10. DKAGONFLIES OF GENUS ACIAGRION LAIDLAW. 9 



EXPLANATION OF PLATE. 

 (All figures drawn by the author.) 



Fig. 1. Forewing of male Aciagnon pallidum from collection of E. B. William- 

 son. 



2. Detail of base of forewing of Acwgrion pallidum. 



3. Detail of base of hind wing of Aciagrion pallidum. 



4. Apex of abdomen of male Aciagrion pallidum, from the side. 



5. Apex of abdomen of female Aciagrion pallidum, from the side. 



6. Pterostigma of hind wing of Aciagrion pallidum. 



7. Pterostigma of forewing of Aciagrion pallidum. 



8. Terminal parts of penis of Aciagrion hisopa. 



9. Terminal parts of penis of Aciagrion pallidum, seen obliquely from the 



side. 



10. Apex of abdomen of male Aciagrio-n borneense, seen from above. 



11. End-on view of tenth segment of abdomen of Aciagrion occidentale. 



12. Terminal parts of penis (slightly diagrammatic) of Aciagrion iorneense. 



13. Apex of abdomen of female Aciagrion borneense, from above. 



14. Anal appendages of male Aciagrion olympicum, from the side and a 



little ventrally. 



15. Apex of abdomen of Aciagrion tiUyardi, seen from side. 



16. Apex of abdomen of male Aciagrion occidentale, seen from aDove. 



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