74 



Explanation of Plate VI. 



MALE GENITALIA OF'PTEKOPIIORIDJK. 



Fig. 1. Oxyptilus ningoris, side view. 



Fig. 2. Oxyptilus ningoris, top view. 



Fig. 3. Oxyptilus ningoris, view from beneath. 



Fig. 4. Oxyptilus tenuidactylus, side view. 



Fig. f>. Oxyptilus tenuidactylus, top view. 



Fig. 6. Oxyptilus tenuidactylus, view from beneath. 



Fig. 7. Oxyptilus delawaricus, side view. 



Fig. 8. Oxyptilus delawaricus, top view. 



Fig. 9. Pterophorus cretidactylus, side view. 



Fig. 10. Pterophorus cretidactylus, top view of dorsal plate 



and uncus. 



Fig. 11. Orneodes hexadactyla, side view. 



Fig. 12. Orneodes hexadactyla, top view. 



Fig. 13. Orneodes hexadactyla, view from beneath. 



Fig. 14. Pterophorus ambrosise, side view. 



Fig. 15. Pterophorus ambrosise, top v!ew. 



Fig. 16. Pterophorus ambrosiae, view of inside of right clasper. 



Fig. 17. Pterophorus ambrosise, view of inside of left claeper. 



