HETEROXEREIS STAGE OF NEREIS KOBIENSIS MiIXTOSH. 2JI 



motor organs of the animal. Whether the animal goes to pieces 

 after the sex cells are thrown off, or whether it subsequently 

 regains its normal condition, cannot be determined by the ma- 

 terial at my disposal. 



YASSAR COLLEGE, March 3, 1905. 



