insects infesting Jigs. 45 



Explanation of Plates. 



PLATE IV. 



Fig. 1. Sycobia bethyloides, magnified. 



2. Mandible of ditto. 



3. Maxillary and labial palpi of ditto. 



4. Front of clypeus and antenna of ditto. 



5. Extremity of bind leg of ditto. 



6. Extremity of tbe male genitalia of ditto, witb the retinacula 



seen obliquely. 



7. One of the retinacula of ditto, seen fiat. 



8. Head of a smaller male specimen of ditto, with smaller 



mandibles. 



9. Walherella temeraria, magnified. 



10. Extremity of mandibles of ditto. 



11. Antenna of male. 



12. Extremity of the male genitalia of ditto. 



PLATE V. 



13. Sycobiella Saundersii, male, magnified. 



14. Mandible of ditto. 



15. Antenna of ditto. 



16. Alary appendage of ditto. 



17. Fore leg of ditto. 



18. Tarsi of intermediate legs of ditto. 



19. Extremity of the male genitalia of ditto. 



20. Sycoscapter insignis, male, magnified. 



21. Mandible of ditto. 



22. Maxillae, labium, and palpi of ditto. 



23. Antenna of ditto, with several detached joints. 



24. Part of the middle of one of the rudimentary wings of 



ditto. 



25. Fore leg of ditto. 



26. Hind leg of ditto. 



27. Metathorax and abdomen of the male, with the terminal 



parts withdrawn. 



28. Male genitalia of ditto, exserted. 



29. Extremity of ditto, with the retinacula. 



