Plate III 



Diahrotica soror. Type He 



Fig. 56 First spermatocyte, spireme stage. 

 Figs. 57 and 58 First spermatocytes, metaphase. 



Type lid 



Figs. 59 and 60 First spermatocytes, spireme stage. 

 Fig. 6 1 First spermatocyte, prophase. 

 Figs. 62 to 64 First spermatocytes, metaphase. 

 Fig. 65 First spermatocyte, anaphase. 



Diahrotica l2-punctata 



* 



Fig. 66 Spermatogonia! metaphase, nineteen chromosomes. 



Fig. 67 Spermatogonia! metaphase, twenty chromosomes. 



Fig. 68 First spermatocyte, spireme stage, no supernumerary. 



Fig. 69 First spermatocyte, spireme stage, one supernumerary. 



Fig. 70 First spermatocyte, spireme stage, two supernumeraries. 



Fig. 71 First spermatocyte, spireme stage, three supernumeraries. 



Fig. 72 First spermatocyte, spireme stage, four supernumeraries. 



Fig. 73 First spermatocyte, metaphase, four supernumeraries. 

 Figs. 74 and 75 First spermatocytes, anaphase, two supernumeraries 



Figs. 76 to 78 First spermatocytes, unusually small supernumerary. 



