TRANSACTIONS 



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American Philosophical Society 



HELD AT PHILADELPHIA 



For Promoting Useful Knowledge 



New Series, Vol, XXI, Part II L, ^/^., 77 P^g^^^ 

 with 5 flutes. Recently Published 



Chromosomes in the Spermatogenesis of the Hemiptera 



Heteroptera. 



By Thos. H. Montgomery, Jr. 



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