PLATE III. 



(All the figures are more or less magnified.) 



Fig. 1. — Part of antenna of Haldbates sericeus, showing the jointlets between the second and third, 



and third and fourth joints. 

 Fig. 2. — Upper side of the last (4th) joint of rostrum of Halobafcs v:ilUcrstorffi. 

 Fig. 3. — Under side of the last (4th) joint of rostrura of Halohatcs v:illlcrstorffi,. 

 Fig. 4. — Apical part of a mandible of Halohates sericeus, showing the teeth. 

 Fig. 5. — The conjoined maxillfe of Haldbates sericeus, from about the middle of the rostrum, seen 



from above. h,b, the maxillre, a the space between them. 

 Fig. ha. — Theoretical diagram of a transverse section of the maxillte ; same species and part as fig. 5. 

 rig. 6. — Apex of the conjoined maxillfe of Halohates sericeus. 

 Fig. 6ff. — Apex in profile of one maxilla of the same species. 



Fig. 7. — Outline of head of Halobafcs sericeus, showing the situation of the ocellus-like tubercles. 

 Fig. 8. — One of the ocellus-like tubercles in Halohates wiillcrsiorj/i, showing the smaller hair-tipped 



tubercle inside the rim. 

 Fig. 9. — Apex of the front tibia of Halobates wiillerstorffi, i, showing the peculiar patch of hairs. 

 Fig. 10. — Apex of the front tibia in Halobates sericeus, $, showing the peculiar patch of hairs. 

 Fig. 11. — Some of the hairs from the peculiar patch on the front tibia of Halobates sericeus, t?- 

 Fig. 12. — Apex of the front tibia of Halohates sericeus, ?. 

 Fig. 13. — Front tarsus of Halohatcs wiillerstorffi. 

 Fig. 14. — Claws of the front tarsus of Halohates u-ullerstorffi. 

 Fig. 15. — Middle leg of Halohates sericeus, tr. trochanter,/, femur, ti. tibia, ta. 1 tarsus first joint, ta.3 



tarsus second joint. 

 Fig. 16. — Part of middle tibia and tarsus of Halohates wiillerstorffi. The letters have the same meaning 



as in fig. 15. 

 Fig. 17. — Part of first joint of middle tarsus of Halohatcs sericeus, showing the short and long 



meaning fringes. 

 Fig. 18. — Apex of the hind tarsus of Halohates vmUerstorffi. 



Fig. 19. — Apex of the hind tarsus of Halohatcs umllersforffi. 



Fig. 20. — Second and third genital segments of the male of Halohates sericeus denuded. 



Fig. 21. — Upper side of second genital segment of the male of Halohates wiillerstorffi. 



Fig. 22. — Under side of the second genital segment of the male of Halohatcs wiillerstorffi, showing 

 asymmetry of the horns. (In the drawing the asymmetry is shown on the wrong side. 

 It is the left horn which is twisted.) 



Fig. 23. — One of the " horns " of the second genital segment of the male of Halohates vmUerstorffi. 



Fig. 24. — One of the " horns " of the second genital segment of the male of Halohates sericeus. 



Fig. 25. — Upper side of the third genital segment above of the male of Halohatcs v;iillcrstorffi denuded. 



Fig. 26. — Under side of the third genital segment above of the male of Halohates sericeus. 



Fig. 27. — Inner side of the third genital segment below of the male of Halohates iciillerstmffi. 



Fig. 28. — Side-view of the " capsule " of the male of Halohates wiillerstorffi. 



Fig. 29. — Abdomen of the larva of Halohatcs hayanus, showing the chitinization. 



Fig. 30. — Egg of Halohatcs v.-idlerstorffi. 



