GA5IET0GENESISAND FERTILISATION IN NEMATUS RIBESII. 113 



Fig. 17. — Second polar mitoses, equational type, with 8 cbrornosomes. 

 Tig. 18. — Second polar mitosis, equatorial plate in pole view, with 7 cliro- 

 mosomes, some preparing to divide. 



Fig. 19. — Second polar mitoses, metapliase ; reduced type, with 4 chro- 

 mosomes. 



Fig, 20. — Equatorial plate of reduced type, showing 4 double chromo- 

 somes. 



Fig. 21. — Stage between first and second maturation divisions, reduced 

 type, with 4 double chromosomes each end. 



Fig, 22. — Two blastoderm mitoses, each with 4 chromosomes and con- 

 spicuous centrosomes. 



Fig. 23. — Abnormal polar mitosis. 



VOL, b\, PART 1. NEW SERIES. 



