PLATE G 

 All figures from Cambarus virilis 



EXPLANATION OF FIGURES 



43 and 44 Second maturation division stages of a type C, ])rimary spermat- 

 ocyte. 



45 Spermatid, type C containing no chromatoid bodies. 



46 to 49 Second maturation stages of a type A primary spermatocyte. Figure 

 47 is from a smear preparation; figure 48 = figure 97, and figure 49 = figure 98. 



50 Spermatid, type A', with two chromatoid bodies in the cytoplasm (fig. 99). 



51 to 53 Second maturation stages of type A primar}- spermatocyte. Figure 

 51 = figure 104, and figure 52 = figure 106. 



54 Metaphase, second spermatocyte division of a tyjie B ])rimary spermatocyte, 

 showing one chromatoid body at one pole. 



640 



