EGG PRODUCTION BY ADULT MALE-PRODUCING FEMALES. 321 



organ of the male is unable to pierce through the thickened 

 cuticle of the adult female. 



5. Much of the sperm of the males may be wasted by being 

 injected into young female-producing females or into other male 

 individuals or by being shed into the water in attempted copula- 

 tion with adult females. 



BIOLOGICAL LABORATORY, WESLEYAN UNIVERSITY, 



MlDDLETOWN, CONN., August 12, 1913. 



