352 THOMAS SAY FOUNDATION 



PLATE 31. 



Genitalia of Peltoperla. 



Fig. 1. Peltoperla arcuata Ndm. $, dorsal view. 



Fig. 2. Peltoperla arcuata Ndm. £, ventral view. 



Fig. 3. Peltoperla arcuata Ndm. $ , ventral view. 



Fig. 4. Peltoperla Cornelia Ndm. & Sm. 3, dorsal view. 



Fig. 5. Peltoperla cornelia Ndm. & Sm. $ , ventral view. 



Fig. 6. Peltoperla cornelia Ndm. & Sm. $ , ventral view. 



Fig. 7. Peltoperla maria Ndm. & Sm. $ , ventral view. 



Fig. 8. Peltoperla anna Ndm. & Sm. 9 , ventral view. 



Fig. 9. Peltoperla thyra Ndm. & Sm. $ , side view. 



Fig. 10. Peltoperla thyra Ndm. & Sm. $, supra-anal process. 



Fig. 11. Peltoperla brevis Bks. $, ventral view. 



Fig. 12. Peltoperla brevis Bks. $, dorsal view. 



Fig. 13. Peltoperla brevis Bks. $ , ventral view. 



Fig. 14. Peltoperla cora Ndm. & Sm. $ , dorsal view. 



Fig. 15. Peltoperla cora Ndm. & Sm. $ , ventral view. 



Fig. 16. Peltoperla cora Ndm. & Sm. 5) ventral view. 



