ARTIFICIAL PARTHENOGENESIS IN CUMINGIA 



17 



sure, but one may fairly conclude from them that eggs in which 

 maturation has been suppressed are able to develop to cellular 

 larvae; while those in which it has been completed form ab- 

 normal non-cellular swimmers if they develop at all. This con- 

 clusion is supported by the experiments already described, 

 which showed that a high percentage of maturation resulted in 

 a low percentage of cleavage-stages and larvae. It is also sup- 

 ported by the cytological evidence given in the following 

 sections. 



TABLE 4 

 Isolated eggs 



THE JOURNAL OF EXPERIMENTAL ZOOLOGY, VOL. 22. NO. 1 



