PLATE 10 
EXPLANATION OF FIGURES 
77 Large first spermatocyte in act of division. Note the size of the tetrads 
and spindle. These cells degenerate in the act of dividing at this stage. 
78 to 80 Large spermatocytes of first-year larvae in act of division. Figure 
79 shows a tripolar spindle and irregular arrangement of the tetrads. 
81 and 82 Larval spermatocytes. Figure 82 is of a cell in process of degener- 
ation. The tetrads have lost their annular appearance. 
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