ON THE CTENÔPHORE EGG . 



Figs. 1—6 x60. 



Fig. I, embryo with seven comb-rows developed from an egg operated 

 before the formation of the polocytes ; Fig. 2, embryo with eight comb-rows 

 and two shorter entoderm sacs resulted from the same operation as Fig. I ; 

 Fig. 3, normal small sized embryo from the same operation ; Figs. 5 and 6, 

 twin embryos developed from an egg operated as in Fig. 4. 



