130 



PARTHENOGENESIS 



[CH. 



(3) Maturation with two polar divisions, giving rise to 

 three polar nuclei and an egg nucleus. 



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rt 



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 .5 | 



3 S 

 D U 



1 



O rt 



i) c/5 



1 



3 3 



5x0 3 



be g 



U C 



3 .~ 



SJ "O 



01 C 



aT O 



"8 



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6581 



The maturation of parthenogenetic eggs with two polar 

 divisions appears to be confined to the Insects 1 , and is best 



1 Apart from the male-producing eggs of the Rotifers mentioned in group ( i ) 

 above. 



