EXPLANATION OF TLATE III. 



Fig. 1. Pupa of Culex caliyinosus, Graham, lateral view. 



2. Siphon of the larva of JEdunorphns dvniesticus, Theo. ; lateral view^ the yentral 



side ou the left. 



3. First and second segmeuts of the abdomen of the larva of Stegomyia africana, 



Theo. ; dorsal view, showing the stellate and other hairs. 



4. Siphon of the same larva ; lateral view, the ventral side on the right. 



5. Pupa of Stegomyia africana, Theo. ; lateral view. 



G. One of the anal plates of the same pupa, showing the unusual ciliation. 



7. Larva oi Stegomijia africana, Theo., dorsal view. (Immature form.) 



8. Siphon of the same larva, more magnified and in a different position ; lateral view, 



the ventral side being on the left. 



9. Dorsal view of one of the comb-scales of the same larva. 



10. Lateral view of the same scale, both highly mngnified. 



11. Pupa of Stegomyia africana, lateral view. (Bred from larvae similar to fig. 7.) 



12. Anal segment of the larva of Culex tir/ripesy Grandpre, yav.fusca, Theo.^ seen from 



a half ventral view. 



13. Siphon of the same larva ; lateral view, the ventral side on the left, 



14. The end of the same siphon, seen when the part was in a perpendicular position^ 



and showing the stigmata of the spiracles and the valves and apodemes. 

 a, spiracle : h, valve ; c, apodeme ; e, ventral side. 

 16. Part of a hair of the brush of the same larva, highly magnified. 



16. Pupa of C. tif/rijjes, WM.fusca-, lateral view. 



17. Siphon of the larva of Cidex dissimilisy Theo.; lateral view, the ventral side on 



the right. 



18. Comb of the same larva. 



19. A single scale of the same comb, liighly magnified. 



