PLATE 5 



EXPLANATION OF FIGURES 



54 to 62 First spermatocyte metaphase spindles 



54 No possible X present. 



55 and 56 Two projecting arms. 



57 One projecting rod toward lower pole. 



58 and 59 Projecting round chromosome toward lower pole. 



60 y-shaped chromosome toward lower pole. 



61 F-shaped chromosome toward lower pole and two projecting arms toward 

 upper pole. 



62 Four-parted body toward lower pole. 



63 to 69 First spermatocyte anaphases 



63 No possible A'-chromosome present. 



64 Projecting arm at upper pole. 



65 Projecting rod-like arm at lower pole. 



66 Separate four-parted body at upper pole. 



67 to 69 Corresponding projecting arms at both poles. 



80 



