OVARY OF LEFTODORA 



45 



®@ o ha. 



DO y 



B 



Fig. 15. — A, Ovary of a parthenogenetio Leptodora hyalina; B, base of another ovary 

 of the same species, showing a so-called " nutrient chamber " ; C, ovary of a female 

 Daphnw., showing the formation of a winter-egg. E, EyE^, Parthenogenetic egg ; 

 Ep, ovarian epitlielium ; G, germarium ; N. C, nutrient chamber ; 0. D, oviduct ; TF, 

 "winter-egg ; 1, 2, 4, the other three cells of the same group ; 11, III, two other 

 groups of germ-cells. 



