Mestoma Antarcticum (sp. nov.) from Bloemfontein. 
3 
1. Ovary. 2. Oviduct. 3. Eeceptaculum seminis (empty in Fig-. 1). 4. Yolk-duct. 
5. Bursa copulatrix (empty in Fig. 1). 6. Uterus (empty in Fig. 1). 7. Uterine 
opening into atrium. 8. Penis. 9. Opening of ductus ejaculatorius into the 
vesicula. 10. Vesicula seminalis. 11. Opening of ductus seminalis into the 
vesicula.j 
