H 3 M s ■ 



TRANSACTIONS 



OF TliK 



AMERICAN PHILOSOPHIfT^T: SOCIETY 



/ 



HELD AT PHILADELPHIA 



FOR PROMOTING USEFUL KNOWLEDGE 



VOLUME XXI— NEW SERIES 



PART III 



Article I] \ Chromosomes m the Sperniatogenesis of the Hendptera Heteroptera. By Thos, H. Monfgmnery, Jr 



i-in: AMl.KU \X T'HILOSOPTTTC \ L >n( 1|■■L•^ 

 104 .South Fifth Stkeet 

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