PLATE III. 



(All the figures are more or less magnified.) 



Fig. 1. — Part of antenna of Halohafes scriccus, showing the joiutlets between the second and third, 



and third and fourth joints. 

 Fig. 2. — Upper side of the last (4th) joint of rostrum of Halohatcs wiUlerstorffi,. 

 Fig. 3. — Under side of the last (4th) joint of rostrum of Ralobates wiillerstorffi,. 

 Fig. 4.- — Apical part of a mandible of Ralohates scriccus, showing the teeth. 

 Fig. 5. — The conjoined maxillae of Halobatcs scriccus, from about the middle of the rostrum, seen 



from above. 'b,b, the maxillse, a the space between them. 

 Fig. -Sft. — Theoretical diagram of a transverse section of the maxillae ; same species and part as fig. 5. 

 Fig. 6. — Apex of the conjoined maxillae of Ralohates sericeus. 

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



Fig. 7. — Outline of head of Ralohates scriccus, showing the situation of the ocellus-like tubercles. 

 Fig. 8. — One of the ocellus-like tubercles in Ralohates wullerstorffi., showing the smaller hair-tipped 



tubercle inside the rim. 

 Fig. 9. — Apex of tht; front tibia of Ralohates icidlcrstorffi, $, showing the peculiar patcli of hairs. 

 Fig. 10. — -Apex of the front tibia in Ralohates sericeus, S, showing the peculiar patch of hairs. 

 Fig. 11. — Some of the hairs from the peculiar patch on the front tibia of Ralohates sericeus, $ . 

 Fig. 12. — Apex of the front tibia of Ralohates sericeus, $. 

 Fig. 13. — Front tarsus of Ralohates wiillerstorffi. 

 Fig. 14. — Claws of the front tarsus of Ralohates wiillerstorffi. 

 Fig. 15. — Middle leg of Ralohates sericeus, tr. trochanter,/, femur, ti. tibia, fa. 1 tarsus first joint, ta.2 



tarsus second joint. 

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



as in fig. 15. 

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



meaning fringes. 

 Fig. IS. — Apex of the hind tarsus of Ralohates indlerstorffi. 

 Fig. 19. — Apex of the hind tarsus of Ralohates wiillerstorffi. 



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

 Fig. 21. — Upper side of second genital segment of the male of Ralohates iviillcrstorfi. 

 Fig. 22. — Under side of the second genital segment of the male of Ralohates 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 Ralohates wiillerstorffi^. 

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

 Fig. 25. — ^Upper side of the third genital segment above of the male of Ralobates luiillerstmffi dennded. 

 Fig. 2C. — Under side of the third genital segment above of the male of Ralohates sericeus. 

 Fig. 27. — Inner side of the third genital segment below of the male of Ralohates u-uUcrstorffi. 

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

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

 Fig. 30. — Egg of Halohatcs wiillerstorffi. 



