PLATE XLI. 



Robertsonia tennis. 



Fig. 1. Adult female. 



2. Anterior antenna, female. 



3. Anterior antenna, male. 



4. Posterior antenna. 



5. Mandible. 



6. Maxilla. 



7. First foot- jaw. 



8. Second foot-jaw. 



9. First foot. 



10. Third foot. 



11. Inner branch of second foot, male. 



12. Fifth foot, male. 



13. Fifth foot, female. 



14. Posterior abdominal segments and tail, 



Mesochra Lilljeborgii. 



15. Anterior antenna, female. 



16. Anterior antenna, male. 



17. Posterior antenna. 



18. Mandible. 



19. Second foot-jaw. 



20. Fifth foot, male. 



21. Posterior abdominal segments and tail, 



