Plate II 



Diahrotica soror. Type 11a 



Fig. 28 Spermatogonia! metaphase, twenty chromosomes. 



Fig. 29 First spermatocyte, spireme stage. 



Figs. 30 to 34 First spermatocytes, metaphase. 



Figs. 35 to 37 First spermatocytes, anaphase. 



Fig 38 First spermatocyte, telophase. 



Fig. 39 Second spermatocyte, rest stage. 



Figs. 40 to 45 Second spermatocytes, metaphase, polar view. 



Figs. 46 to 48 Second spermatocytes, metaphase, lateral view. 



Type llh 



Fig. 49 Spermatogonia! metaphase, twenty-one chromosomes. 



Fig. 50 First spermatocyte, spireme stage. 



Fig. 51 First spermatocyte, prophase. 



Figs. 52 and 53 First spermatocytes, metaphase. 



Fig. 54 First spermatocyte, anaphase. 



Fig. 55 Second spermatocyte, metaphase. 



