PLATE B. 





f 31 



13 





14 



3 



( 



15 



Jl 





16 



I 



19 



17 



% * 



18 



v n 

 <3 /? 





21 





23 



PLATES A, B, AND C. SUCCESSIVE STAGES IN THE SPERMATOGENESIS OF SCHISTO- 



CERCA DAMNIFICA. 

 467 



