586 The University Science Bulletin. 



PLATE LXII. 



1. Ventral view of last three abdominal segments of the first-instar male. 



2. Ventral view of last three abdominal segments of the second-instar 

 female. 



3. Ventral view of last three abdominal segments of the third-instar female. 



4. ^"entral view of last three abdominal segments of the fourth-instar 

 female. 



5. Ventral view of last three abdominal segments of the fifth-instar female. 



6. Ventral view of the nymphal abdomen with the air channel closed. 



7. Ventral view of the nymphal abdomen with the air channel open. 



8. Caudal view of the tip of the abdomen, showing anal opening. 



9. Mesothoracic leg of a fifth-instar nymph, showing spines on the femur. 



10. First-instar antenna. 



11. Second-instar antenna. 



12. Third-instar antenna. 



13. Fourth-instar antenna. 



14. Fifth-instar antenna. 



