Plaie VIII. 



Ax I NE HETEROCEIÎCA. 



Fig. 1. A portion of tlio cross-section of the body some distance behind the common 



genital opening, x 20i diam. 

 ,, 2. A small portion of the cross-section of the body through the anterior part 



of the brain, x 204 diam. a, nerve cells. 

 ,, 3. Median sagittal section of the body through the region of the common 



genital opening, x 204 diam. 

 ,, 4. ]\Iedian sagittal section through the vagina, x 204 diam. a; an opening 



of unknown nature, 

 ,, 5. Ovary and the genital ducts adjoining it. x 50 diam. 



