PLATE XII. 



MICROVELIA BOREALIS. 



1. A single egg in its mass of adhesive material. 



2. First instar nymph. 



3. Second instar nymph. 



4. Third instar nymph. 



5. Adult apterous female. 



6. Molted skin of third instar nymph. 



7. Adult apterous male. 



8. Last instar nymph. 



9. Adult male winged. (Determined by Bueno, but does not show 

 curved hind tibia.) 



10. An egg shortly before hatching. The embryo usually lies with 

 its dorsal surface to the support. The hatching device shows between 

 the eyes. 



11. Female winged. 



(290) 



