PLATE XIX. 



NOTONECTA NYMPHS. 



Fig. 1. Dorsal view of Notonecta variabilis first instar nymph. 



Fig. 2. Dorsal view of Notonecta irrorata first instar nymph. 



Fig. 3. Dorsal view of Notonecta insnlata first instar nymph. 



Fig. 4. Egg of N. insidata. 



Fig. 5. Hind femur of first instar nymph of Notonecta variabilis. 



Fig. 6. Egg of N. irrorata. 



Fig. 7. Hind femur of first instar nymph of Notonecta insnlata. Com- 

 pare with figure 5. 



Fig. 8. Egg of N. variabilis. 



Fig. 9. Middle femur (ventral view) of N. irro^-ata first instar nymph. 



Fig. 10. Egg of N. undulata. Figures 4, 6, 8 and 10 to same scale. 



Fig. 11. Middle femur (ventral view) of N. variabilis. Compare 

 with figure 9. 



Fig. 12. Eggs of Buenoa margaritacea inserted in stem. 



Fig. 13. Hind leg of first instar nymph of N. variabilis. Note the 

 banded leg. 



(304) 



