294 



Naohide Tatsu. 



2a 



5^- 



FiG. II (X330). 



2a, Enucleated fragment .-ith two cvtasters. 2h, nucleated fragment from the same egg stained 

 with acetocarmine. J, enucleated fragment with three cytasters. 4, enucleated fragment w.th five 

 cvtasters; three of them have fused. 5^, enucleated fragment with many cvtasters. 56, nucleated 

 fragment from the same egg. 



