PLATE 2 



EXPLANATION OF FIGURES 



8 Frontal section through the posterior end of the ovary as it curves 

 inward toward the oviduct. Note the definite membranes about the ova. X 270. 



9 Oblique sagittal section showing the crucial stage in the formation of the 

 capsule. Two ova are being surrounded together with yolk cells by the secre- 

 tion of the shell glands. Numerous spermatozoa present about the eggs, and 

 a mass of them in the antrum. X 270. 



ant., antrum femininum 



al., atrium commune 



int., intestine 



mit., mitochondrial mass 



o., ovary 



sh.gL, shell glands 



sh. sec, secretion of shell glands 



sp., spermatozoon 



S.V.. vesiculum seminalis 



vit., vitellarium 



y., yolk 



542 



