PLATE 5 



EXPLANATIOX OF FIGURES 



28 First spermatocyte anaphase, class 4 with one V, showing the distribu- 

 tion of the rod and V parts, in black. The entire complex, including the other 

 multiples is shown. 



29 to 42 Various second spermatocyte metaphase complexes (except fig. 33) 

 in polar view, of H. viridis. 



29 Class 1 with accessory chromosome. 



30 Class 2 without accessory chromosome. 



31 Class 2 with accessory chromosome in multiple. 



32 Class 4, (one ring, one V and hexad in first spermatocyte) no accessory 

 chromosome, two rods of V, and half of ring. 



33 First spermatocyte anaphase of class 4, no accessory chromosome. 



34 Class 6 (in first spermatocyte one ring, free accessory chromosome) no 

 accessory chromosome. 



35 Class 6 with accessory chromosome. 



36 Same condition as figure 35, same animal. 



37 Same condition as figure 35, another animal. 



38 to 42 From one animal of class 6 with the octad in the form of a V, acces- 

 sory chromosome free. 



38 With V and no accessory chromosome — ten chromosomes. 



39 With V and with accessory chromosome — eleven chromosomes. 



40 No V and no accessory chromosome — eleven chromosomes. 



41 As in figure 40. 



42 No V, but with accessory chromosome — twelve chromosomes. 



598 



