332 THOMAS SAY FOUNDATION 



PLATE 21. 



Genitalia of Alloperla. 



Fig. 1. Alloperla oorealis Bks. $, ventral view. 



Fig. 2. Alloperla oorealis Bks. $ . 



Fig. 3. Alloperla oorealis Bks. 5 , dorsal view. 



Fig. 4. Alloperla mediana Bks. 9, ventral view. 



Fig. 5. A lloperla mediana Bks. #. 



Fig. 6. Alloperla lateralis Bks. # 



Fig. 7. A lloperla lateralis Bks. $, ventral view. 



Fig. 8. Alloperla fidelis Bks. $, dorsal view. 



Fig. 9. Alloperla fidelis Bks. $ , side view. 



Fig. 10. Alloperla fidelis Bks. 9> ventral view. 



Fig. 11. Alloperla continua Bks. 9> ventral view. 



Fig. 12. Alloperla continua Bks. $ , dorsal view. 



Fig. 13. Alloperla spatulata sp. nov. $, ventral view. 



Fig. 14. Alloperla spatulata sp. nov. $ , dorsal view. 



