Keport IV, U. S. Entomological Commission. 



Plate XXIV. 



Fie. 1. 



Fior. 3. 



Fig. 2. 



Fig. 4. 



Fig. 5. 



K6' 



Fig, 6. 



Fis. 7. 



TT. S. B.. Del. 



Eddy-chamber Spray-xozzles. 



