Keport lY, TJ. S. Entomological Commission. 



Plate LVII. 



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• '" t^ ™ 



Tier. 1 



m 



B 



Fig. 2. 



Kg. 6. 



Fi-. 3. 



Fig. 4. 



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Fig. 5. 



Rotary- SIEVE Machines. 



