20. Shape of the proboscis in Hilara
21. Shape of the proboscis in Ocydromia
22. Shape of the proboscis in Euthyneura
23. Hind leg of Ramphomyia pennata
24. Hind leg of Sphœrocera subsultans
24-1/2. Palpus of Lispe tentaculata
25. Leg of Limnophila—tibia spurred
26. Leg of Erioptera—tibia not spurred
27. Head and double-jointed proboscis of Myopa
28. Head of Asilus—front view 4 (a) the hollowed vertex (b) the mystax