PLATE XXVII. 



Fig. 1. Fifth instai" of Palmacorixa buenoi. 

 Fig. 2. Male PalmacoHxa buenoi from Beebe lake. 

 Fig. 3. Male PahnacoHxa buenoi from Bool's Backwater, nearby. 

 These sizes are distinct. 



Fig. 4. Fourth instar nymph of PalmacoHxa buenoi. 



Fig. 5. Third instar nymph of Palmacorixa buenoi. 



Fig. 6. Second instar nymph of Palmacorixa buenoi. 



Fig. 7. First instar nymph of Palmacorixa buenoi. 



Fig. 8. First instar nymph of Arctocorixa alternata. N. Y. variety. 



Fig. 9. Fourth instar nymph of Arctocorixa alternata. N. Y. variety. 



Fig. 10. Third instar nymph of Arctocorixa alternata. N. Y. variety. 



Fig. 11. Second instar nymph of Arctocorixa alternata. N. Y. variety. 



Fig. 12. Fifth instar nymph of ArctocoHxa alternata. N. Y. variety, 



Compare the various instars of the two bugs as to color pattern. 



(320) 



