Fig. 38. 
Fig. 39. 
Fig. 40. 
Fig. 37. — Outline of genital papilla in sagittal section, showing also the papillae around the base; 
a-a, b-b, c-c, planes of section. Enlarged. Original. 
Fig. 38. — Section through genital papilla in plane a-a, of figure 37. The section is not quite at right 
angles to the axis of this papilla. It shows the metraterm (m.) and the ductus ejaculatorius (d. e.) 
filled with spermatozoa. Enlarged. Original. 
Fig. 39. — Section through genital papilla in plane b-b of figure 37. Lettering as figure in 38. En- 
larged. Original, 
Fig. 40. — Section through genital papilla in plane c-e of figure 37. Lettering as in figtire 38. En- 
larged. Original. 
