Eeport IV, JJ. S. Entomological Commission. 



Plate XVII. 



Fig. 5. 



Fig. 6. 



Fig. 1. 



W. S. B; Del. 



x\\\\Nx<s\N>t^\v;>is:^\V^^c^V^^; ?^ 



c a 



i^r 



Pig. 2. 



Slot-nozzles for Spraying — Continued. 



