3IRS. M. E. BABBEH OK LIPABTS BOAVKEUI. 



457 



attenuated nature of their proboscis would in all probability fail 

 to remove the operculum that shields the polliuia ; but amongst 



r 

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the numerous tribes of our Ilymonoptera and Diptera are many 

 small bees and flies admirably adapted to perform tliis work. 



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