PLATE 9 



EXPLANATION OF FIGURES 



76 and 77 A. obscurus. Late stage of first spermatocytes. 



78 to 84 Paratettix cucculatus Morse. 



78 to 82 Spermatogonia! cells. Sex chromosome (3x-) is 'wooly,' as usual. 

 In figure 81 the 6's and one no. 5 are foreshortened. Figure 82 is from a cyst of 

 dividing cells which contained an apical cell in the center. 



83 First spermatocyte division. 



296 



