PLATE VI 



Figure 1. The hypopharynx of Ceratopogon sp. x 1200 



Figure 2. The labrum-epipharynx of same, x 1200 



Figure 3. The labrum-epipharynx of Joblotia sp. Very highly 



magnified. 



Figure 4. The hypopharynx of same. Very highly magnified. 

 Figure 5. The maxilla of same, x 630 

 Figure 6. The labrum-epipharynx of Tabanus albimedius, dorsal 



view, x 600 

 Figure 7. The cutting edge of the mandible of Simulium indicum. 



X1000 



Figure 8. The hypopharynx of same. X 630 

 Figure 9. The labrum-epipharynx of same. The lateral hairs 



are very much finer than represented in the drawing. 



X630 



Figure 10. The maxilla of same, side view. X 1000 

 Figure 11. The labium of Phlebotomus papatasi, seen from 



behind. 



Figure 12. The mandible of same, distal end. 

 Figure 13. The maxilla of same, showing the two sets of teeth. 

 Figure 14. The mandible of same. 

 Figure 15. The maxilla of same, showing the 'apodeme,' or 



representative of the stipes. 

 Figure 16. The labrum-epipharynx of same. 

 Figure 17. The hypopharynx of same. 

 Figure 18. The head of same in side view, showing the proboscis, 



pro., and the long palp. 



Except in figures 11, 15, and 18, only the distal ends are shown, 

 Figures 11 to 18 are from Grassi, copied by Mr. G, Taylor. 



