588 E. RAY LANKESTElR. 



" parthenogenesis " is conveniently restricted to a repro- 

 ductive process, not by neutral or "^ niedeterocratic " cells, 

 but by cells essentially fitted for sexual zygosis which, in the 

 exceptional cases designated by the term " parthenogenesis," 

 develop to maturity without zygosis. 



The word " parthenogenesis " is equally applicable to the 

 development of a macrogamete (gynsecocratic), and to that 

 of a microgamete (androcratic) when it occurs without union 

 with a cell of the opposite sex. 



